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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.0293.2 K30573026: BIG-IP virtual server with FastL4 profile vulnerability CVE-2022-23027 23 April 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIG-IP Virtual server with FastL4 Publisher: F5 Networks Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-23027 Original Bulletin: https://support.f5.com/csp/article/K30573026 Comment: CVSS (Max): 5.3 CVE-2022-23027 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) CVSS Source: F5 Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Revision History: April 23 2022: Vendor added fixed version for BIG-IP January 21 2022: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K30573026: BIG-IP virtual server with FastL4 profile vulnerability CVE-2022-23027 Original Publication Date: 19 Jan, 2022 Latest Publication Date: 19 Apr, 2022 Security Advisory Description When a FastL4 profile and an HTTP, FIX, and/or hash persistence profile are configured on the same virtual server, undisclosed requests can cause the virtual server to stop processing new client connections. (CVE-2022-23027) Impact Traffic is disrupted for new client connections. This vulnerability allows an unauthenticated remote attacker to cause a denial-of-service (DoS) on the BIG-IP system, specific to the impacted virtual server. There is no control plane exposure; this is a data plane issue only. Security Advisory Status F5 Product Development has assigned ID 887965 (BIG-IP) to this vulnerability. This issue has been classified as CWE-697: Incorrect Comparison . 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. Note: After a fix is introduced for a given minor branch, that fix applies to all subsequent maintenance and point releases for that branch, and no additional fixes for that branch will be listed in the table. For example, when a fix is introduced in 14.1.2.3, the fix also applies to 14.1.2.4, and all later 14.1.x releases (14.1.3.x., 14.1.4.x). For more information, refer to K51812227: Understanding security advisory versioning. Additionally, software versions preceding those listed in the Applies to (see versions) box of this article have reached the End of Technical Support (EoTS) phase of their lifecycle and are no longer evaluated for security issues. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. +-----------+------+-----------+----------+----------+------+-----------------+ | | |Versions |Fixes | |CVSSv3|Vulnerable | |Product |Branch|known to be|introduced|Severity |score^|component or | | | |vulnerable |in | |1 |feature | +-----------+------+-----------+----------+----------+------+-----------------+ | |16.x |None |16.0.0 | | | | | +------+-----------+----------+ | | | | |15.x |15.1.0 - |15.1.4 | | | | | | |15.1.3 | | | | | | +------+-----------+----------+ | | | | |14.x |14.1.0 - |14.1.4.4 | | | | | | |14.1.4 | | | |Virtual server | |BIG-IP (all+------+-----------+----------+Medium |5.3 |with FastL4 and | |modules) |13.x |13.1.3.6 - |13.1.5 | | |certain L7 | | | |13.1.4 | | | |profiles | | +------+-----------+----------+ | | | | |12.x |12.1.5.3 - |Will not | | | | | | |12.1.6 |fix | | | | | +------+-----------+----------+ | | | | |11.x |11.6.5.2 |Will not | | | | | | | |fix | | | | +-----------+------+-----------+----------+----------+------+-----------------+ | |8.x |None |Not | | | | |BIG-IQ | | |applicable|Not | | | |Centralized+------+-----------+----------+vulnerable|None |None | |Management |7.x |None |Not | | | | | | | |applicable| | | | +-----------+------+-----------+----------+----------+------+-----------------+ |F5OS-A |1.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-----------+------+-----------+----------+----------+------+-----------------+ |F5OS-C |1.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-----------+------+-----------+----------+----------+------+-----------------+ |Traffix SDC|5.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-----------+------+-----------+----------+----------+------+-----------------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. ^2The CVSSv3 score link takes you to a resource outside of AskF5, and it is possible that the document may be removed without our knowledge. 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 Acknowledgements This issue was discovered internally by F5. Supplemental Information o K16446: The BIG-IP system now allows a Performance (Layer 4) virtual server to have an associated HTTP profile 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYmNeFONLKJtyKPYoAQgIyQ/9HFz2qKVPjOFMJn/YcLtjo/UvrldGgvc4 oMava+AagfG+FSdnxK9q0oMyPB5r0urol4LhlWejV5lkkDBgblIsrSDl2GC+7Mmy ou9HTCtlyGEPRNA/Cqn5+NEiwFArUuUMwU2As4SeopJH4HLxY48+WFb+2sSwQ8Zf ctjRgqstZKCxcX6SHF8jNap4rV+wsSW/xJbYFniDqbeOviP0xSW4c4SbzM2hmKNr P3sMloEIOVG2YWkz4nMKU7OaZJuyNEIKaTMTVV/HHGE8FFxI3MPoKFrllLKmEJFg ILvF+Kn3MBO+TpzfXWj1dZQQTnKb0lsKEnIyn6QNpPJe14s5Psjkn8iufr8ClcRI +lYMsL7WjrYy3Gih487k1xQ5WrpaqaaQ4q+pNJVlReegN/YGZNTiaXiTnwdDX0Y9 jyiZqbNfPWmosZBOjhYNqpQ17CW5BzYfbZmkQrWmEH1bCyJiqFM6mubVL/onu8mN nvlk1MkpBFrBalGZqK5SPzYo/8H5ow0VPQI4qEYiDk2TI7TuZVpIExy2ilzMorfy lWNFUvU9o+vEuPmSOlTYikP2553FiqjgVXlg314QsI2yoXeVipsuuq2bwzaidGwb A5MdQi7EcwAArqiIauoBqre422GjDONPPkya+XeSWATM/WRgVXDKmuCkdQoCu6eP LP4/LJhZ1Ig= =loKQ -----END PGP SIGNATURE-----