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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.5229 K33484483: F5OS vulnerability CVE-2022-41835 20 October 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5OS Publisher: F5 Networks Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-41835 Original Bulletin: https://support.f5.com/csp/article/K33484483 Comment: CVSS (Max): 7.3 CVE-2022-41835 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H) CVSS Source: F5 Networks Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- K33484483: F5OS vulnerability CVE-2022-41835 Original Publication Date: 19 Oct, 2022 Security Advisory Description Excessive file permissions in F5OS allow an authenticated local attacker to execute a limited set of commands in a container and impact the F5OS controller. (CVE-2022-41835) Impact An authenticated low-privileged attacker with CLI access can exploit this vulnerability locally by including crafted arguments to a specific command. A successful exploit allows the attacker to escalate privileges and cross a security boundary. Security Advisory Status F5 Product Development has assigned ID 1079633-1 (F5OS-A) and ID 1079633-2 (F5OS-C) to this vulnerability. This issue has been classified as CWE-269: Improper Privilege Management. 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 tables. You can also use iHealth to diagnose a vulnerability for BIG-IP and BIG-IQ systems. For more information about using iHealth, refer to K27404821: Using F5 iHealth to diagnose vulnerabilities. For more information about security advisory versioning, refer to K51812227: Understanding security advisory versioning. In this section o BIG-IP and BIG-IQ o F5OS o NGINX o Other Products BIG-IP and BIG-IQ 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. +------------+------+--------------+----------+----------+------+-------------+ | | |Versions known|Fixes | |CVSSv3|Vulnerable | |Product |Branch|to be |introduced|Severity |score^|component or | | | |vulnerable^1 |in | |2 |feature | +------------+------+--------------+----------+----------+------+-------------+ |BIG-IP (all |All |None |Not |Not |None |None | |modules) | | |applicable|vulnerable| | | +------------+------+--------------+----------+----------+------+-------------+ |BIG-IP SPK |All |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +------------+------+--------------+----------+----------+------+-------------+ |BIG-IQ | | |Not |Not | | | |Centralized |All |None |applicable|vulnerable|None |None | |Management | | | | | | | +------------+------+--------------+----------+----------+------+-------------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. ^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. F5OS +-------+------+-----------------+----------+--------+-------+----------------+ | | |Versions known to|Fixes | |CVSSv3 |Vulnerable | |Product|Branch|be vulnerable^1 |introduced|Severity|score^2|component or | | | | |in | | |feature | +-------+------+-----------------+----------+--------+-------+----------------+ |F5OS-A |1.x |1.0.0 - 1.0.1 |1.1.0 |High |7.3 |CLI | +-------+------+-----------------+----------+--------+-------+----------------+ |F5OS-C |1.x |1.3.0 - 1.3.2 |1.5.0 |High |7.3 |CLI | +-------+------+-----------------+----------+--------+-------+----------------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. ^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. NGINX +---------+------+---------------+----------+----------+------+---------------+ | | |Versions known |Fixes | |CVSSv3|Vulnerable | |Product |Branch|to be |introduced|Severity |score^|component or | | | |vulnerable^1 |in | |2 |feature | +---------+------+---------------+----------+----------+------+---------------+ |NGINX | | |Not |Not | | | |(all |All |None |applicable|vulnerable|None |None | |products)| | | | | | | +---------+------+---------------+----------+----------+------+---------------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. ^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. Other Products +-------+------+----------------+----------+----------+-------+---------------+ | | |Versions known |Fixes | |CVSSv3 |Vulnerable | |Product|Branch|to be vulnerable|introduced|Severity |score^2|component or | | | |^1 |in | | |feature | +-------+------+----------------+----------+----------+-------+---------------+ |Aspen |All |None |Not |Not |None |None | |Mesh | | |applicable|vulnerable| | | +-------+------+----------------+----------+----------+-------+---------------+ |Traffix|All |None |Not |Not |None |None | |SDC | | |applicable|vulnerable| | | +-------+------+----------------+----------+----------+-------+---------------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. ^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 installing a version listed in the Fixes introduced in column. If the Fixes introduced in column does not list a version for your branch, then no update candidate currently exists for that branch and F5 recommends that you upgrade to a version with the fix (refer to the table). If the Fixes introduced in column lists a version prior to the one you are running, in the same branch, then your version should have the fix. Mitigation As this attack is conducted by legitimate, authenticated users, there is no viable mitigation that also allows users access to the F5OS system. The only mitigation is to remove access for users who are not completely trusted. Expose the F5OS management interface to only trusted networks. Acknowledgements This issue was discovered internally by F5. 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 K8986: F5 product support policies 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: https://auscert.org.au/gpg-key/ iQIVAwUBY1Dgy8kNZI30y1K9AQi9VhAAmfCFMxhbCxDFabK+qSLe/s8zlUHLV0+g ciqb5POBFGFcaMIk8dEimrHJzocXrvK7E/jykZgOSpJN5uc6J2v1kSj49qc3GShM PlAW8OcXM8c9Y7iu4SqzjQ55Scf6IpR6s6QHPOgo9jWNkw2KeeSyJevSK/JcXRwO /96LbpPXDLD93kpBmHp6pc3/lOMoQcoVAVz6g4rYNov2Wnqye1fCJ55VKFIXFaSS 0AyjDHH7tbP1+GqaS71NUu/fbatg+frvSwaiUuggsnZx/pcnz/qDGuz/P5q2c34j YSqwLKNq5DqNIAZcdCrfWJbZajiwxrnlPhrsvR2PL9jwsYNA18+gSPFCLWeCrz5N 8OhmAJcDUGPFEiKOwHD6Thqt9GMSAdYovYiY0XKjMDYcfrXn0M+EpMRZjoSG0xl9 WwU3wZDkWbWNu06X/DuE7ndSy+wkBh1AjwLwrrMnvRrsyL0hTftsvGjE8A/HN7Ch J1LcbwnK6NRscOLX0p0xQiwAPzm4VLvJ8/rS/BUvLKIzjieKtUXM6RzQmO+ichFw hqg1BLYqJY5rc5/gwDAFs3PtLpi9/iVUjkoO6Ao01xyhfCvzJ7YfXOVMDDV+yj2F PLMLvniH8QSFTZwiOMd730m9QZa2AR/7Zw7UlK9saqW0jNxQstoR+GpRLedF4MR2 HllU7uXUuGo= =egHv -----END PGP SIGNATURE-----