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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0490 TMM vulnerability CVE-2021-22975 11 February 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Traffic Management Microkernel Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Unknown/Unspecified Resolution: Patch/Upgrade CVE Names: CVE-2021-22977 CVE-2021-22975 Original Bulletin: https://support.f5.com/csp/article/K21971977 https://support.f5.com/csp/article/K14693346 Comment: This bulletin contains two (2) F5 Networks security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- K21971977: TMM vulnerability CVE-2021-22975 Original Publication Date: 11 Feb, 2021 Security Advisory Description Under some circumstances, Traffic Management Microkernel (TMM) may restart on the BIG-IP system while passing large bursts of traffic. (CVE-2021-22975) Impact This vulnerability may allow an attacker to cause a denial-of-service (DoS) to the BIG-IP system. The BIG-IP system may temporarily fail to process traffic as it recovers from a TMM restart. If the BIG-IP system is configured for high availability (HA), it fails over to a peer system. This vulnerability affects BIG-IP systems when one of the following conditions is met: o You configured a BIG-IP APM Virtual Private Network (VPN) virtual server. o You have a VIPRION or VIPRION-based Virtual Clustered Multiprocessing (vCMP) guest with multiple blades, and traffic-flows that traverse TMMs on different blades. Security Advisory Status F5 Product Development has assigned ID 919257 (BIG-IP) to this vulnerability. To determine if your product and version have been evaluated for this vulnerability, refer to the Applies to (see versions) box. To determine if your release is known to be vulnerable, the components or features that are affected by the vulnerability, and for information about releases, point releases, or hotfixes that address the vulnerability, refer to the following table. For more information about security advisory versioning, refer to K51812227: Understanding security advisory versioning. +-------------------+------+----------+----------+----------+------+----------+ | | |Versions |Fixes | |CVSSv3|Vulnerable| |Product |Branch|known to |introduced|Severity |score^|component | | | |be |in | |1 |or feature| | | |vulnerable| | | | | +-------------------+------+----------+----------+----------+------+----------+ | |16.x |16.0.0 - |16.0.1.1 | | | | | | |16.0.1 | | | | | | +------+----------+----------+ | | | | |15.x |15.1.0 - |15.1.2.1 | | | | | | |15.1.2 | | | | | |BIG-IP (LTM, AAM, +------+----------+----------+ | | | |Advanced WAF, AFM, |14.x |14.1.0 - |14.1.3.1 | | | | |Analytics, APM, | |14.1.3 | | | | | |ASM, DDHD, DNS, +------+----------+----------+High |7.5 |TMM | |FPS, GTM, Link |13.x |None |Not | | | | |Controller, PEM, | | |applicable| | | | |SSLO) +------+----------+----------+ | | | | |12.x |None |Not | | | | | | | |applicable| | | | | +------+----------+----------+ | | | | |11.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ | |7.x |None |Not | | | | | | | |applicable| | | | | +------+----------+----------+ | | | |BIG-IQ Centralized |6.x |None |Not |Not |None |None | |Management | | |applicable|vulnerable| | | | +------+----------+----------+ | | | | |5.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |Traffix SDC |5.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ ^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is possible that the document may be removed without our knowledge. Security Advisory Recommended Actions If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Fixes introduced in column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists. Mitigation None Supplemental Information o K41942608: Overview of security advisory articles o K4602: Overview of the F5 security vulnerability response policy o K4918: Overview of the F5 critical issue hotfix policy o K9502: BIG-IP hotfix and point release matrix o K13123: Managing BIG-IP product hotfixes (11.x - 16.x) o K167: Downloading software and firmware from F5 o K9970: Subscribing to email notifications regarding F5 products o K9957: Creating a custom RSS feed to view new and updated documents - -------------------------------------------------------------------------------- K14693346: TMM vulnerability CVE-2021-22977 Original Publication Date: 11 Feb, 2021 Security Advisory Description Cooperation between malicious HTTP client code and a malicious server may cause TMM to restart and generate a core file. (CVE-2021-22977) Impact When attackers exploit this vulnerability, the Traffic Management Microkernel (TMM) restarts, and then the BIG-IP system temporarily fails to process traffic while it recovers. Also, devices configured in a device group may fail over. Security Advisory Status F5 Product Development has assigned ID 931513 (BIG-IP) to this vulnerability. To determine if your product and version have been evaluated for this vulnerability, refer to the Applies to (see versions) box. To determine if your release is known to be vulnerable, the components or features that are affected by the vulnerability, and for information about releases, point releases, or hotfixes that address the vulnerability, refer to the following table. For more information about security advisory versioning, refer to K51812227: Understanding security advisory versioning. +------------------+------+-----------+----------+----------+------+----------+ | | |Versions |Fixes | |CVSSv3|Vulnerable| |Product |Branch|known to be|introduced|Severity |score^|component | | | |vulnerable |in | |1 |or feature| +------------------+------+-----------+----------+----------+------+----------+ | |16.x |16.0.0 - |16.0.1.1 | | | | | | |16.0.1 | | | | | | +------+-----------+----------+ | | | | |15.x |None |Not | | | | | | | |applicable| | | | |BIG-IP (LTM, AAM, +------+-----------+----------+ | | | |Advanced WAF, AFM,|14.x |14.1.2.4^ |14.1.3.1 | | | | |Analytics, APM, | |2 - 14.1.3 | | | | | |ASM, DDHD, DNS, +------+-----------+----------+High |7.5 |TMM | |FPS, GTM, Link |13.x |None |Not | | | | |Controller, PEM, | | |applicable| | | | |SSLO) +------+-----------+----------+ | | | | |12.x |None |Not | | | | | | | |applicable| | | | | +------+-----------+----------+ | | | | |11.x |None |Not | | | | | | | |applicable| | | | +------------------+------+-----------+----------+----------+------+----------+ | |7.x |None |Not | | | | | | | |applicable| | | | | +------+-----------+----------+ | | | |BIG-IQ Centralized|6.x |None |Not |Not |None |None | |Management | | |applicable|vulnerable| | | | +------+-----------+----------+ | | | | |5.x |None |Not | | | | | | | |applicable| | | | +------------------+------+-----------+----------+----------+------+----------+ |Traffix SDC |5.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +------------------+------+-----------+----------+----------+------+----------+ ^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is possible that the document may be removed without our knowledge. ^2BIG-IP 14.1.2.4 is not a supported release; please use a later release. Refer to K5903: BIG-IP software support policy. Security Advisory Recommended Actions If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Fixes introduced in column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists. Mitigation None Supplemental Information o K41942608: Overview of security advisory articles o K4602: Overview of the F5 security vulnerability response policy o K4918: Overview of the F5 critical issue hotfix policy o K9502: BIG-IP hotfix and point release matrix o K13123: Managing BIG-IP product hotfixes (11.x - 16.x) o K167: Downloading software and firmware from F5 o K9970: Subscribing to email notifications regarding F5 products o K9957: Creating a custom RSS feed to view new and updated documents - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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