998085-1 : BIG-IP DataSafe GUI does not save changes

Component: Fraud Protection Services

Symptoms:
Due to a JavaScript error, the BIG-IP DataSafe GUI does not save changes.

Conditions:
-- Provision FPS.
-- License DataSafe.
-- Configure the system using the GUI.

Impact:
Configurations made for DataSafe using the BIG-IP Configuration Utility GUI cannot be saved.

Workaround:
Use tmsh to configure the BIG-IP system.

Fix:
BIG-IP DataSafe GUI is working properly and configurations are now saved.

995629-3 : Loading UCS files may hang if ASM is provisioned★

Component: TMOS

Symptoms:
If a UCS file from a BIG-IP system running a different software version that also has an ASM configuration is loaded onto a device that already has ASM provisioned, the load may hang indefinitely.

Conditions:
-- A system that has ASM provisioned.
-- Loading a UCS file with an ASM configuration that comes from a different system.

Impact:
UCS load might fail.

Workaround:
If you encounter this, run 'load sys config default' and de-provision ASM. The UCS file should then load successfully.

990333-5 : APM may return unexpected content when processing HTTP requests

Component: Access Policy Manager

Symptoms:
APM may return unexpected content when processing HTTP requests

Conditions:
APM profile should be configured for virtual

Impact:
Unexpected content returned to clients

Workaround:
when CLIENT_ACCEPTED {
  ACCESS::restrict_irule_events disable
}

when HTTP_REQUEST {

   if {[HTTP::uri] starts_with "/public/images/customization/" && ([HTTP::path] contains ".." || [HTTP::path] contains "%2") } {
     set removeDots [string map [list ".." "" ".%2e" "" ".%2E" "" "%2e." "" "%2E." "" "%2e%2e" "" "%2E%2e" "" "%2e%2E" "" ] [HTTP::uri]]
     HTTP::redirect http://[HTTP::host]$removeDots
# log local0. "Redirect to [HTTP::host]$removeDots"
  }
}

Fix:
APM now processes HTTP requests as expected

982869-1 : With auto-init enabled for Message Routing peers, tmm crashes with floating point exception when tmm_total_active_npus value is 0

Component: Service Provider

Symptoms:
Tmm may crash.

Conditions:
This occurs when auto initialization is enabled for one or more Message Routing peers and during CMP transition when tmm_total_active_npus value is 0.

Impact:
Traffic disrupted while tmm restarts.

Workaround:
None

Fix:
Tmm no longer crashes under these conditions.

981385-3 : AVRD does not send HTTP events to BIG-IQ DCD

Component: Application Visibility and Reporting

Symptoms:
AVRD does not send HTTP events to BIG-IQ data collection device (DCD).

Conditions:
This happens under normal operation.

Impact:
AVRD does not write Traffic Capture logs for analysis. Cannot analyze issues when Traffic Capture does not provide event information.

Workaround:
None.

981169-2 : F5 TMUI XSS vulnerability CVE-2021-22994

Solution Article: K66851119

980809-2 : ASM REST Signature Rule Keywords Tool Hardening

Component: Application Security Manager

Symptoms:
The ASM REST Signature Rule Keywords Tool does not follow current best practices.

Conditions:
The ASM REST Signature Rule Keywords Tool does not follow current best practices.

Impact:
The ASM REST Signature Rule Keywords Tool does not follow current best practices.

Workaround:
N/A.

Fix:
The ASM REST Signature Rule Keywords Tool now follows current best practices.

977053-2 : TMM crash on standby due to invalid MR router instance

Component: Service Provider

Symptoms:
In high availability (HA) setup, TMM on the standby device may crash due to an invalid Message Routing (MR) router instance.

Conditions:
-- HA environment.
-- Connection mirroring is enabled.

Impact:
Traffic disrupted while tmm restarts.

Workaround:
None.

Fix:
TMM on the standby device no longer crashes under these conditions.

976925-2 : BIG-IP APM VPN vulnerability CVE-2021-23002

Solution Article: K71891773

975465-2 : TMM may consume excessive resources while processing DNS iRules

Component: Global Traffic Manager (DNS)

Symptoms:
TMM may consume excessive resources while processing DNS iRules

Conditions:
- RESOLVER::summarize iRule command in use

Impact:
TMM consumes excessive resources

Workaround:
Use 'DNSMSG::section <response> answer' in place of 'RESOLVER::summarize <response>'

Fix:
TMM now processes DNS iRules as expected.

975233-2 : Advanced WAF/ASM buffer-overflow vulnerability CVE-2021-22992

Solution Article: K52510511

974501-1 : Excessive memory usage by mirroring subsystem when remirroring

Component: Local Traffic Manager

Symptoms:
Aggressive sweeper messages are seen in /var/log/ltm similar to the following:
Dec 31 02:35:44 bigip1 warning tmm[25306]: 011e0002:4: sweeper_segment_cb_any: Aggressive mode /Common/default-eviction-policy activated (0) (global memory). (26227799/30854144 pages)

In severe cases, tmm might restart and generate a core file due to an out of memory condition.

Conditions:
The active BIG-IP has a large number of mirrored fastL4 connections.
The active BIG-IP reconnects the statemirror connection to the standby BIG-IP. This is indicated by messages similar to the following in /var/log/ltm:
Dec 31 02:35:37 bigip1 err tmm[25306]: 01340001:3: high availability (HA) Connection with peer 10.25.0.11:1029 for traffic-group /Common/traffic-group-1 established.

Impact:
A portion of the connections handled by the BIG-IP might be dropped causing traffic interruption for those connections. In severe cases, tmm might restart causing traffic interruption.

Fix:
The memory utilization when remirroring fastL4 flows has been improved to allow remirroring to handle a larger number of connections.

973333-5 : TMM buffer-overflow vulnerability CVE-2021-22991

Solution Article: K56715231

971297-2 : DNSKEYS Type changed from external to internal and Keys are not stored in HSM after upgrade★

Component: Global Traffic Manager (DNS)

Symptoms:
DNSSEC keys which are stored on netHSM type is changed from FIPS external to internal during the upgrade.

Conditions:
-- BIG-IP with a NetHSM license
-- BIG-IP uses external DNSSEC keys stored in the NetHSM
-- The BIG-IP device is upgraded

Impact:
The keys are stored locally following the upgrade.

Workaround:
None.

969509-4 : Possible memory corruption due to DOS vector reset

Component: Advanced Firewall Manager

Symptoms:
Unpredictable result due to possible memory corruption

Conditions:
DOS vector configuration change

Impact:
Memory corruption

Fix:
Added correct logic to reset DOS vector.

969385-2 : Automatic attach/detach BeWAF policy to virtual server stops working for all virtual servers.

Component: BIG-IP Risk Engine

Symptoms:
Automatic attach/detach BeWAF policy to a virtual server stops working for all virtual servers if at least one virtual server has a regular ASM policy with TAP profile

Conditions:
Define Virtual Servers with DOS profiles, along with Virtual Servers that are managed by cloud (Cortex)

Impact:
Detaching virtual servers from DOS can cause the attach option to be disabled.

Workaround:
Do not define virtual servers with cloud along with virtual servers managed by cloud (Applications).

Fix:
None

969213-1 : VMware: management IP cannot be customized via net.mgmt.addr property

Component: TMOS

Symptoms:
IP addresses provided for VM customization in VMware are ignored. net.mgmt.addr and net.mgmt.gw properties supposed to be used when customization of IP addresses during VM setup is desired. But the addresses are ignored.

Conditions:
VMware only. Happens in any of the ways in which address are supplied via net.mgmt.addr and net.mgmt.gw. See https://clouddocs.f5.com/cloud/public/v1/vmware/vmware_setup.html for scenario where net.mgmt.addr and net.mgmt.gw can be set. VM customization profiles still work properly.

Impact:
Management IP cannot be customized in VMware during the VM setup.

968641-2 : Fix for zero LACP priority

Component: Local Traffic Manager

Symptoms:
A LACP priority of zero prevents connectivity to Cisco trunks.

Conditions:
LACP priority becomes 0 when system MAC address has 00:00 at the end.

Impact:
BIG-IP may be unable to connect to Cisco trunks.

Workaround:
None.

Fix:
Eliminate LACP priority equal 0

968421-2 : ASM attack signature doesn't matched

Component: Application Security Manager

Symptoms:
A specific attack signature doesn't match as expected.

Conditions:
Undisclosed conditions.

Impact:
Attack signature does not match as expected, request is not logged.

Workaround:
N/A

Fix:
Attack signature now matches as expected.

967889-1 : Incorrect information for custom signature in DoS Protection:DoS Overview (non-http)

Component: Advanced Firewall Manager

Symptoms:
Custom signature of virtual server shows incorrect attack information.

Conditions:
-- Virtual server has a custom signature
-- An attack is mitigated
-- View the custom signature information via Security :: DoS Protection : DoS Overview (non-HTTP)

Impact:
GUI shows incorrect information for custom signature

Fix:
GUI shows correct information for custom signature

967745 : Last resort pool error for the modify command for Wide IP

Component: TMOS

Symptoms:
System reports error for the modify command for Wide IP.

01b60021:3: Last resort pool type not specified for Wide IP 9084.example.com of type A.

Conditions:
Running the modify command involving last-resort-pool and not specifying a type or name for the object.

Impact:
The object is not modified, and the system reports an error.

Workaround:
The GSLB type needs to be given for any and all TMSH commands that utilize GTM Wide IPs or GTM Pools.

Append the command with last-resort-pool a <pool_name>, for example:

modify a 9084.example.com aliases replace-all-with { 9084.example1.com } last-resort-pool a pool1_test

Fix:
The GSLB type needs to be given for any and all TMSH commands that utilize GTM Wide IPs or GTM Pools.

966701-2 : Client connection flow is aborted when data is received by generic msg filter over sctp transport in BIG-IP

Component: Service Provider

Symptoms:
Client connections are aborted when the generic message router profile is used in conjunction with the SCP transport profile.

Conditions:
-- SCTP transport profile
-- MRF generic msg router profile

Impact:
BIG-IP is unable to process the traffic received over the SCTP transport for MRF generic message routing

Fix:
Enable the return type in generic msg filter when data received over SCTP transport

966681-1 : NAT translation failures while using SP-DAG in a multi-blade chassis

Component: Carrier-Grade NAT

Symptoms:
NAT translation fails

Conditions:
-- VIPRION multi-blade chassis
-- Configure AFM NAT/CGNAT and attach the AFM NAT Policy / lsnpool to the virtual server
-- Configure sp-dag on the vlan's

Impact:
Traffic failure, performance degraded

Workaround:
Change the DB variable tm.lsn.retries to the maximum value of 4096

Fix:
Increase the number of attempts in selecting local translation IP (an IP when used makes the return packet to land on the same TMM where the NAT selection is happening). This can be controlled with DB variable tm.lsn.retries. The actual attempts is 16 times the value set in this db variable.

966277-1 : BFD down on multi-blade system

Component: TMOS

Symptoms:
After a secondary blade reboots in a multi-blade system, bi-directional forwarding detection (BFD) stops functioning.

Conditions:
-- Multi-blade VIPRION environment
-- BFD enabled
-- A secondary blade reboots

Impact:
BFD flaps on the secondary blade that was rebooted. The BFD session flap clears the routes on the peer.

965617-3 : HSB mitigation is not applied on BDoS signature with stress-based mitigation mode

Component: Advanced Firewall Manager

Symptoms:
BDoS signature attacks are mitigated in software rather than via HSB

Conditions:
Dynamic or custom signature in stress-based mitigation mode on appliance with HSB support

Impact:
More resources loading during DDoS attack

Fix:
Correct free spot search with offloading to HSB

964897-2 : Live Update - Indication of "Update Available" when there is no available update

Component: Application Security Manager

Symptoms:
Live Update notifies you that an update is available even though there is no available update.

Conditions:
The latest file is installed but not present on the system and the second-latest file has an 'error' status

Impact:
Live Update erroneously indicates that an update is available.

Workaround:
1. upload the latest file that is not present on the system with scp to '/var/lib/hsqldb/live-update/update-files/'
2. restart 'tomcat' service:
> bigstart restart tomcat

Fix:
Fixed an issue with Live Update notification.

964585-3 : "Non OK return code (400) received from API call" is logged for ProtocolInspection auto update

Component: Protocol Inspection

Symptoms:
- Protocol Inspection autoupdate logs "Non OK return code (400) received from API call" when the F5 download site does not contain Protocol Inspection Update container for the BIG-IP version.

Conditions:
- Protocol Inspection auto update is enabled.
- The BIG-IP version does not have the ProtocolInspection container in the relevant download section on F5 downloads.

Impact:
- The error message does not accurately explain the cause of the problem.

Workaround:
None.

Fix:
- More context is added to the log message when Protocol Inspection file is not present on the downloads site.

964577-3 : IPS automatic IM download not working as expected

Component: Protocol Inspection

Symptoms:
IPS automatic download of IM packages from the F5 Downloads site does not complete as expected.

IPS automatic IM download considers the BIG-IP software major and minor version numbers.

However, the IPS library is dependent only on major version numbers. The site should constrain IM package download only to those that are compatible with the major version.

Conditions:
Auto download of IM package for IPS.

Impact:
New minor releases, such as BIG-IP v15.1.1 and later, cannot download IPS IM packages.

Workaround:
Manually download the IM package and upload it onto the BIG-IP system.

Fix:
Minor releases of BIG-IP software can now automatically download the IM package without issue.

963237-3 : Non-EDNS response with RCODE FORMERR are blocked by AFM MARFORM vector.

Component: Advanced Firewall Manager

Symptoms:
When a client sends a DNS request to a NON EDNS capable server, the server may send a legitimate response with RCODE FORMERR and no DNS data. The MALFORM DNS vector blocks those requests.

Conditions:
-- The client sends a DNS request to NON EDNS capable server
-- The server replies with RCODE FORMERR and no DNS data.

Impact:
AFM erroneously detects an attack and mitigates it, and the client does not get a responses from the EDNS server

Workaround:
Disable DNS MALFORM vector mitigation or put the EDNS server in allow list.

963049-1 : Unexpected config loss when modifying protected object

Component: TMOS

Symptoms:
A virtual server configuration is changed unexpectedly.

Conditions:
- Create virtual server with two client SSL profiles
- Modify same virtual server in Protected Objects panel.

Impact:
Virtual servers client SSL profiles are removed if you have more than one profile.

Workaround:
None

Fix:
Virtual server client SSL profiles are no longer removed from the config if the update happens through Protected Objects panel in the GUI.

963017-2 : The tpm-status-check service shows System Integrity Status: Invalid when Engineering Hotfix installed

Component: TMOS

Symptoms:
Upon booting a BIG-IP hardware system running an Engineering Hotfix version of BIG-IP v14.1.0 or later, messages of the following form may be logged in the LTM log file (/var/log/ltm):

err tpm-status[####]: System Integrity Status: Invalid
info tpm-status-check[####]: System Integrity Status: Invalid

In addition, a message similar to the following may appear on the serial console while the system is booting:

[ ###.######] tpm-status-check[####]: Checking System Integrity Status
[ ###.######] tpm-status-check[####]: sh: /bin/rpm: Permission denied
[ ###.######] tpm-status-check[####]: tpm-status-check: System Integrity Status: Invalid

Similar messages appear when viewing the status of the tpm-status-check service via the systemctl utility:

# systemctl -l status tpm-status-check.service
* tpm-status-check.service - F5 Trusted Platform Module
   Loaded: loaded (/usr/lib/systemd/system/tpm-status-check.service; static; vendor preset: enabled)
   Active: failed (Result: exit-code) since <...>
 Main PID: #### (code=exited, status=1/FAILURE)

<...> tpm-status-check[####]: Checking System Integrity Status
<...> tpm-status-check[####]: sh: /bin/rpm: Permission denied
<...> tpm-status[####]: TPM Status Version 15.1.1.0.6.6
<...> tpm-status[####]: TMOS BIG-IP 15.1.1-0.0.6.0
<...> tpm-status[####]: BIOS 0614 v3.10.032.0
<...> tpm-status[####]: BIOS SIRR 2019-05-30_08-46-02
<...> tpm-status-check[####]: tpm-status-check: System Integrity Status: Invalid
<...> systemd[1]: tpm-status-check.service: main process exited, code=exited, status=1/FAILURE
<...> systemd[1]: Unit tpm-status-check.service entered failed state.
<...> systemd[1]: tpm-status-check.service failed.


However, checking the System Integrity Status using the 'tpm-status' or 'tmsh run sys integrity status-check' command shows 'System Integrity Status: Valid'.

Conditions:
This may occur under the following conditions:

-- Running BIG-IP v14.1.0 or later.
-- Using Engineering Hotfixes containing fixes for the following bugs:
   - ID893885 (https://cdn.f5.com/product/bugtracker/ID893885.html)
   - ID946745 (https://cdn.f5.com/product/bugtracker/ID946745.html)
-- Using hardware platforms that include a Trusted Platform Module (TPM), including:
   - BIG-IP i2000, i4000, i5000, i7000, i10000, i11000, i15000 Series appliances
   - VIPRION B4450 blades

Impact:
The tpm-status-check service inaccurately indicates that the System Integrity Status is not Valid.

This is incorrect, and conflicts with the accurate System Integrity Status provided by the 'tpm-status' utility and 'tmsh run sys integrity status-check' command.

Workaround:
To observe the correct System Integrity Status, do either of the following:
-- Use the 'tpm-status' utility.
-- Run the command:
tmsh run sys integrity status-check

Fix:
This incorrect status reporting has been corrected.

962817-2 : Description field of a JSON policy overwrites policy templates description

Component: Application Security Manager

Symptoms:
Creating a UTF-8 policy using a template for the first time creates a binary policy the system uses the next time you create a UTF-8 policy with the same template.

If the creation occurs via JSON policy import, the description field of the JSON policy overwrites the description from the template, and the next time you create a UTF-8 policy using the same template, the system uses the description from the first JSON policy.

Conditions:
Create an initial UTF-8 policy with some template using a JSON policy with a custom description.

Impact:
The next time you create a UTF-8 policy with the same template, unless you provide a description, the system uses the one from the initially created JSON policy instead the template.

Workaround:
Before creating the second policy, remove the binary file that was created from the first run. For example if the template used was Fundamental:

rm -f /ts/install/policy_templates/fundamental.bin

Fix:
The binary file now contains the correct description.

960437-2 : The BIG-IP system may initially fail to resolve some DNS queries

Component: Global Traffic Manager (DNS)

Symptoms:
Configurations that use a 'DNS Cache' or 'Network DNS Resolver' are affected by an issue whereby the system may initially fail to resolve some DNS queries.

Subsequent queries for the same domain name, however, work as expected.

Only some domain names are affected.

Conditions:
- The BIG-IP system is configured with either a DNS Cache or Network DNS Resolver.

- The cache is still empty in regard to the domain name being resolved (for example, TMM has just started).

- The cache configuration specifies 'Use IPv6' (the default) but the system has no IPv6 default route.

Impact:
Initial DNS resolution of some domain names fails. Regardless of whether this happens via a DNS cache or Network DNS Resolver, the failure is returned to the client.

In the case of a DNS Cache, the client may just be returned with no record. In the case of a Network DNS Resolver, the failure will depend on the feature using the resolver.

For instance, SWG, SSL Orchestrator, or the HTTP Explicit Forward Proxy, in general, are examples of features that rely on a Network DNS Resolver. In this case, the client's browser will fail to connect to the requested destination, and the client will be shown a proxy error.

Workaround:
Disable 'Use IPv6' in the affected DNS Cache or Network DNS Resolver.

1a. Go to DNS :: Caches :: Cache list.
OR
1b. Go to Network :: DNS Resolvers :: DNS Resolver list.
2. Select the item you want to update in the list.
3. Uncheck 'Use IPv6.
4, Select Update.

You can keep the object in this state (with no consequences) until you define an IPv6 default route on the system, and you wish for the system to also use IPv6 to connect to Internet name-servers.

Fix:
DNS resolution works as expected, with domains resolving the first time they are queried.

960369-2 : Negative value suggested in Traffic Learning as max value

Component: Application Security Manager

Symptoms:
Negative value suggested in Traffic Learning as max value

Conditions:
A huge parameter value is seen in traffic

Impact:
Wrong learning suggestion issued

Workaround:
Manually change maximum allowed value on the parameter to ANY

Fix:
After fix correct suggestion is issued - suggest to change maximum parameter value to ANY

959889-2 : Cannot update firewall rule with ip-protocol property as 'any'

Component: TMOS

Symptoms:
Cannot update the firewall rule with 'any' value as the ip-protocol from the BIG-IP system GUI.

Conditions:
-- Create a rule and set protocol to TCP or UDP
-- From the GUI, change the protocol to "Any" and update

Impact:
Cannot update the firewall rule from GUI.

Fix:
The GUI now allows updating firewall rules with 'any' as an ip-protocal.

959121-4 : Not following best practices in Guided Configuration Bundle Install worker

Component: Guided Configuration

Symptoms:
Guided Configuration Bundle Install worker not following best practices

Conditions:
Guided Configuration Bundle Install worker not following best practices

Impact:
Guided Configuration Bundle Install worker not following best practices

Workaround:
None

Fix:
Guided Configuration Bundle Install worker now following best practices

957337-1 : Tab complete in 'mgmt' tree is broken

Component: TMOS

Symptoms:
TMSH Command: "list mgmt shared <tab>" does not display the tab complete option. You may see an error:

(tmos)# list mgmt shared echo *tab*
Unexpected Error: "Object contains no "method" child value"

Conditions:
When mgmt is used in a tmsh command and you attempt to tab complete

Impact:
You are unable to configure objects in mgmt.

This issue also prevents users with the admin role from accessing the following REST endpoints:

shared/authz/users
shared/echo-js

The error returned was HTTP/1.1 401 F5 Authorization Required

Fix:
Fixed an issue with tab completion for certain commands in the 'mgmt' tree.

956589-1 : The tmrouted daemon restarts and produces a core file

Component: TMOS

Symptoms:
The tmrouted daemon restarts and produces a core file.

Conditions:
Exact trigger is unknown, but the issue was seen on a chassis setup during a blade failover

Impact:
Traffic disrupted while tmrouted restarts.

Workaround:
None

Fix:
Tmrouted daemon should not restart during blade reset

956373-2 : ASM sync files not cleaned up immediately after processing

Component: Application Security Manager

Symptoms:
Some ASM sync files remain on disk after config sync finishes. They remain until periodic clean-up tasks activate

Conditions:
-- ASM provisioned
-- BIG-IP devices are in a sync group
-- Relatively small "/var" partition

Impact:
If the files are large it may lead to "lack of disk space" problem.

956105-2 : Websocket URLs content profiles are not created as expected during JSON Policy import

Component: Application Security Manager

Symptoms:
Websocket URLs content profiles are not created as expected during JSON Policy import

Conditions:
Import JSON Policy with Websocket URLs configured with content profiles.

Impact:
Content profiles are not being added to the webscket URLs causing wrong configuration.

Workaround:
The content profiles can be manually associated after the import process using REST or GUI.

Fix:
Setting the correct profile reference during import.

955145-2 : iControl REST unauthenticated remote command execution vulnerability CVE-2021-22986

Solution Article: K03009991

954429-2 : User authorization changes for live update

Component: Application Security Manager

Symptoms:
User authorization changes for live update

Conditions:
WAF is provisioned

Impact:
User authorization changes for live update

Workaround:
None

Fix:
User authorization changes for live update

954381-2 : iControl REST unauthenticated remote command execution vulnerability CVE-2021-22986

Solution Article: K03009991

953845-1 : After re-initializing the onboard FIPS HSM, BIG-IP may lose access after second MCPD restart

Component: Local Traffic Manager

Symptoms:
When re-initializing an onboard HSM on particular platforms, BIG-IP may disconnect from the HSM after a second restart of the MCPD daemon.

This can occur when using administrative commands such as:
   -- tmsh run util fips-util init
   -- fipsutil init
   -- tmsh run util fips-util loginreset -r
   -- fipsutil loginreset -r

Conditions:
-- Using the following platforms:
  + i5820-DF / i7820-DF
  + 5250v-F / 7200v-F
  + 10200v-F
  + 10350v-F
  + vCMP guest on i5820-DF / i7820-DF
  + vCMP guest on 10350v-F

Impact:
BIG-IP is unable to communicate with the onboard HSM.

Workaround:
The last step in using "fipsutil init" is to restart all system services ("tmsh restart sys service all") or reboot.

Immediately before doing this:

-- open /config/bigip.conf in a text editor (e.g. vim or nano)
-- locate and delete the configuration "sys fipsuser f5cu" stanza, e.g.:

    sys fipsuser f5cu {
        password $M$Et$b3R0ZXJzCg==
    }

Fix:
Fixed an issue with re-initializing the onboard FIPS HSM.

953729-2 : Advanced WAF/ASM TMUI authenticated remote command execution vulnerabilities CVE-2021-22989 and CVE-2021-22990

Solution Article: K56142644 K45056101

953677-2 : TMUI authenticated remote command execution vulnerabilities CVE-2021-22987 and CVE-2021-22988

Solution Article: K18132488 K70031188

953393-2 : TMM crashes when performing iterative DNS resolutions.

Component: Global Traffic Manager (DNS)

Symptoms:
TMM crashes and produces a core file.

Conditions:
The BIG-IP system configuration includes a Network DNS Resolver, which is referenced by another object (for example, a HTTP Explicit Forward Proxy profile) for DNS resolution.

Impact:
Traffic disrupted while tmm restarts.

Workaround:
You may be able to work around this issue by having the Network DNS Resolver work in forwarding/recursive mode rather than in resolving/iterative mode.

To do so, you configure a Forward Zone in the Network DNS Resolver for '.' (the DNS root). This causes DNS to send all DNS requests to a different, external resolver of your choice, which will perform recursive resolution.

The servers you configure for the '.' Forward Zone could be resolvers internal to your organization or public resolvers (e.g. Google DNS).

Fix:
TMM no longer crashes.

952557-2 : Azure B2C Provider OAuth URLs are updated for B2Clogin.com

Component: Access Policy Manager

Symptoms:
Microsoft has deprecated login.microsoftonline.com OAuth Azure Active Directory B2C (Azure AD B2C) URLs. The OAuth Provider templates are updated to support the newer URLs B2Clogin.com.

Conditions:
Azure AD B2C Provider may be non functional if URLs are using logic.microsoftonline.com.

Impact:
Older AD B2C URLs using login.microsoftonline.com may not be functional.

Workaround:
Update existing URLs when creating OAuth B2C providers to use B2Clogin.com.

For more information, see Azure Active Directory B2C is deprecating login.microsoftonline.com :: https://azure.microsoft.com/en-us/updates/b2c-deprecate-msol/.

Fix:
Azure B2C Provider OAuth URLs have been updated to use B2Clogin.com.

952545-2 : 'Current Sessions' statistics of HTTP2 pool may be incorrect

Component: Service Provider

Symptoms:
In HTTP2 full proxy deployment, the LTM pool 'cur_sessions' statistics may show an unusually large number, such as 18446743927680663552

Conditions:
-- HTTP2 full proxy deployment
-- A client sends multiple requests over multiple streams

Impact:
'Current Sessions' statistics can be used to track number of pending requests in the queue and it can underflow.

Workaround:
None.

Fix:
'Current Sessions' statistics of HTTP2 pool reports correctly.

951705-2 : iControl REST unauthenticated remote command execution vulnerability CVE-2021-22986

Solution Article: K03009991

950077-2 : TMUI authenticated remote command execution vulnerabilities CVE-2021-22987 and CVE-2021-22988

Solution Article: K18132488 K70031188

949593-3 : Unable to load config if AVR widgets were created under '[All]' partition★

Component: Application Visibility and Reporting

Symptoms:
When upgrading to or loading saved configuration on BIG-IP software v13.0.0 or later, if the configuration contains AVR widgets created under a partition of '[All]', the config load fails.

Conditions:
This occurs if one or more AVR widgets in the configuration was created under the read-only '[All]' pseudo-partition.
This could have occurred if you were running a version of BIG-IP which did not include the fix for ID 721408.

Impact:
Upgrading to or loading an affected configuration on BIG-IP v13.x or later fails.

Workaround:
Manually edit the /config/bigip.conf configuration file and change '[All]' to 'Common':

# sed -i 's/\\\[All\]/Common/g' /config/bigip.conf
# tmsh load sys config
# tmsh save sys config

This should be done before upgrading to BIG-IP v13.x or later, or before saving configuration to be loaded later, or before loading a saved configuration from the config files.

Fix:
It is possible to successfully upgrade from or load a configuration containing one or more AVR widgets created under the read-only '\[All]' pseudo-partition or under other not existing partitions. With the current fix all partitions are changed to "Common" during upgrade.

949145-5 : Improve TCP's response to partial ACKs during loss recovery

Component: Local Traffic Manager

Symptoms:
- A bursty retransmission occurs during TCP's loss recovery period.

Conditions:
- TCP filter is used.
- TCP stack is used instead of TCP4 stack (based on profile settings).
- Packet loss occurs during the data transfer and TCP's loss recovery takes place.

Impact:
The bursty retransmissions may lead to more data getting lost due to large amount of data being injected into the network.

Workaround:
In versions prior to v16.0.0, use a TCP profile which selects the TCP4 stack instead of the TCP stack. There is no workaround for version 16.0.0.

Fix:
Partial ACK handling during loss recovery is improved.

948769-5 : TMM panic with SCTP traffic

Component: TMOS

Symptoms:
TMM panics and generates a core file. The panic message is "balanced nodes".

Conditions:
SCTP enabled virtual server

Impact:
Traffic interrupted while TMM restarts

Workaround:
Ensure that you have a route to the server's alternate address (like a default route since the remote server might not be under direct control) or
On versions earlier than 13.0 make sure that auto-lasthop is enabled for the virtual server (either via global, vlan or virtual setting)

Fix:
TMM now handles SCTP traffic properly

948757-2 : A snat-translation address responds to ARP requests but not to ICMP ECHO requests.

Component: Local Traffic Manager

Symptoms:
A snat-translation address with ARP enabled responds to ARP requests but not ICMP ECHO requests.

Conditions:
A snat-translation address is configured with ARP enabled.

Impact:
Application traffic should not be impacted, as external hosts trying to resolve the snat-translation and return traffic to it should still be able to do so; however, ping is an important network troubleshooting tool, and not being able to ping the address may create confusion.

Workaround:
None.

Fix:
A snat-translation now correctly responds to both ARP requests and ICMP ECHO requests.

947865-2 : Pam-authenticator crash - pam_tacplus segfault or sigabort in tac_author_read

Component: TMOS

Symptoms:
Pam-authenticator cores. There is a log message in /var/log/user/log:

err pam-authenticator: tac_author_read: short author header, -1 of 12: Connection reset by peer

Conditions:
-- TACACS auth configured on BIG-IP
-- A BIG-IP user authenticates and the user is a TACACS user
-- The TACACS server resets the connection.

Impact:
Pam-authenticator fails with segfault or sigabrt, and the user is unable to authenticate to BIG-IP.

947341-1 : MySQL generates multiple error 24 (too many files open) for PRX.REQUEST_LOG DB tables files

Component: Application Security Manager

Symptoms:
1) var/lib/mysql/mysqld.err is filled with log entries containing:
------------
  200824 11:04:43 [ERROR] mysqld: Can't open file: './PRX/REQUEST_LOG.frm' (errno: 24)
  200824 11:18:46 [ERROR] mysqld: Can't open file: './PRX/REQUEST_LOG.frm' (errno: 24)
  200824 11:35:58 [ERROR] mysqld: Can't open file: './PRX/REQUEST_LOG.frm' (errno: 24)
------------

2) There are a lot of PRX.REQUEST_LOG partitions, in some cases up to 1024, many of which are empty.

Conditions:
ASM/AVR provisioned

Impact:
MySQL out of resources when opening files
PRX.REQUEST_LOG Corrupt

Workaround:
0) If the /appdata partition is filled to 100% and MySQL restarts continuously, refer to the following Knowledge Articles:
   https://support.f5.com/csp/article/K14956
   https://support.f5.com/csp/article/K42497314

1) To identify the empty partitions, look into:
   SELECT * FROM INFORMATION_SCHEMA.PARTITIONS WHERE table_name = 'REQUEST_LOG' AND table_schema = 'PRX'\G

2) For every partition that is empty, manually (or via shell script) execute this sql:
   ALTER TABLE PRX.REQUEST_LOG DROP PARTITION empty_partition_name
where 'empty_partition_name' is the partition name as 'p100001'

4) Increase 'open_files_limit' to '10000'.
--------------------------------
In the /etc/my.cnf file:
1. Change the value of the 'open_files_limit' parameter to 10000.
2. Restart MySQL:
   bigstart restart mysql
--------------------------------

5) pkill asmlogd

Note: This workaround does not survive upgrade. It must be reapplied after every upgrade until the upgraded version contains a fix.

Fix:
This release increases 'open_files_limit' to '10000'.

946953-1 : HTTP::close used in iRule might not close connection.

Component: Local Traffic Manager

Symptoms:
HTTP::close used in an iRule might not close the connection. For example:

when HTTP_REQUEST {
    HTTP::close
    HTTP::respond 200 -version 1.1 content "OK" Content-Type text/plain
  }

Conditions:
Using HTTP::close along with HTTP::respond

Impact:
HTTP connection can be re-used.

Workaround:
Explicitly add close header in the HTTP::respond. For example:

HTTP::respond 200 content "OK" Connection close

Fix:
Fixed an issue where HTTP::close might not close a connection.

946745-2 : 'System Integrity: Invalid' after Engineering Hotfix installation

Component: TMOS

Symptoms:
The 'tmsh run sys integrity status-check -a -v' or 'tpm-status' commands incorrectly report system integrity status as 'Invalid' even when the system software has not been modified.

Conditions:
This occurs if all of the following conditions are true:

-- BIG-IP software v14.1.0 or later version.
-- Engineering Hotfix installed on TPM-supported BIG-IP platform.
-- The Engineering Hotfix contains a fix for ID893885 (https://cdn.f5.com/product/bugtracker/ID893885.html).
-- The Engineering Hotfix contains an updated 'sirr-tmos' package.

Impact:
Incorrect presentation of system software status; the status shows INVALID when it is actually valid.

Workaround:
None.

Fix:
Trusted Platform Module (TPM) status now shows the correct system integrity status when an Engineering Hotfix is installed.

945853-2 : Tmm crash when multiple virtual servers are created, modified, or deleted in quick succession

Component: Advanced Firewall Manager

Symptoms:
TMM crashes during a configuration change.

Conditions:
This occurs under the following conditions:

-- Create/modify/delete multiple virtual servers in quick succession.

-- Perform back-to-back config loads / UCS loads containing a large number of virtual server configurations.

Impact:
Traffic disrupted while tmm restarts.

Workaround:
None.

Fix:
TMM no longer crashes during a configuration change.

945265-4 : BGP may advertise default route with incorrect parameters

Component: TMOS

Symptoms:
If a BGP neighbor is configured with 'default originate,' the nexthop advertised for the default route may be incorrect.

Conditions:
-- Dynamic routing enabled.
-- Using BGP.
-- BGP neighbor configured with 'default originate'.

Impact:
The default route advertised via BGP is not acceptable to peers until the BGP session is cleared.

Workaround:
In imish, run the command:
clear ip bgp <affected neighbor address>

945109-2 : Freetype Parser Skip Token Vulnerability CVE-2015-9382

Component: TMOS

Symptoms:
FreeType before 2.6.1 has a buffer over-read in skip_comment in psaux/psobjs.c because ps_parser_skip_PS_token is mishandled in an FT_New_Memory_Face operation.

Conditions:
An attacker may leverage this vulnerability by creating a crafted input file causing low confidentiality.

Impact:
In ps_parser_skip_PS_token(), lack of proper validation may lead the reading cursor holding the current position being processed to go beyond the end of the text content. This further causes an out of bounds read skip_comment() function and unexpected data may be exposed as a result of the over-read.

Workaround:
N/A

Fix:
Updated Freetype to patch for CVE-2015-9382

944785-2 : Admd restarting constantly. Out of memory due to loading malformed state file

Component: Anomaly Detection Services

Symptoms:
Admd consumes more than 10GB of RSS
Wrong signature statistics and possible memory corruption, potentially results in high memory consumption.

Conditions:
-- Upgrading from 13.x, 14.x to 15.x
-- Device service clustering configuration
-- App-Protect-DOS signatures configured.

Impact:
ADMD not working, ADMD constantly restarting, consuming all of the system memory. Out of memory. ADMD killed due to memory consumption

Workaround:
Make sure that all the devices within a cluster are running compatible state file version (either all with versions before 15.1.0.x or after), if not, then:
1. Stop ADMD on all of those devices: bigstart stop admd
2. Upgrade or Downgrade the BIG-IP version to match the above criteria.
3. Remove the old state files: rm -rf /var/run/adm/*
4. Start ADMD: bigstart start ADMD

If there is an issue on a single blade device, then:
1. Stop ADMD on all of those machines: bigstart stop admd
2. Remove the old state files: rm -rf /var/run/adm/*
3. Start ADMD: bigstart start ADMD

Fix:
No more memory corruption, no OOM nor ADMD restarts.

943669-1 : B4450 blade reboot

Component: TMOS

Symptoms:
In a rare scenario, a B4450 blade suddenly reboots.

Conditions:
This occurs when there is heavy traffic load on VIPRION B4450 blades. The root cause is unknown. It happens extremely rarely.

Impact:
Traffic disrupted while the blade reboots.

Workaround:
None.

Fix:
The system now monitors the pause frames and reboots when needed.

943125-2 : ASM bd may crash while processing WebSocket traffic

Component: Application Security Manager

Symptoms:
Under certain conditions, the ASM BD daemon may crash.

Conditions:
-- ASM provisioned
-- WebSockets in use