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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2489.2 K21548854: zlib vulnerability CVE-2018-25032 16 June 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIG-IP BIG-IQ F5OS-A F5OS-C Traffix SDC Publisher: F5 Networks Operating System: Network Appliance Resolution: Mitigation CVE Names: CVE-2018-25032 Original Bulletin: https://support.f5.com/csp/article/K21548854 Comment: CVSS (Max): 8.2 CVE-2018-25032 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H) CVSS Source: F5 Networks 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:L/A:H Revision History: June 16 2022: Updated vulnerable versions May 20 2022: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K21548854: zlib vulnerability CVE-2018-25032 Original Publication Date: 19 May, 2022 Latest Publication Date: 15 Jun, 2022 Security Advisory Description zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches. (CVE-2018-25032) Impact This vulnerability results in corrupted output, which leads to out-of-bound access, corrupting the memory and potentially causing the application to no longer respond. Security Advisory Status F5 Product Development has assigned ID 1099381 (BaseOS), 1099369 (NodeJS), 1099365 (tm_lib/tmm_zlib), 1099341 (rpmbuild), 1099349 (Dynacache) (BIG-IP, BIG-IQ, BIG-IP Edge Client), ID 1096737 (F5OS-A, F5OS-C), and ID SDC-1836 and SDC-1837(Traffix SDC) 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. 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 known|Fixes | |CVSSv3|Vulnerable | |Product |Branch|to be |introduced|Severity|score^|component or | | | |vulnerable^1 |in | |2 |feature | +-------------+------+--------------+----------+--------+------+--------------+ | |17.x |17.0.0 |None | | | | | +------+--------------+----------+ | | | | |16.x |16.1.0 - |None | | | | | | |16.1.3 | | | |BaseOS | | +------+--------------+----------+ | |NodeJS, | |BIG-IP APM |15.x |15.1.0 - |None | | |tm_lib/ | |Clients | |15.1.6 | |Medium |5.9 |tmm_zlib, | | +------+--------------+----------+ | |rpmbuild, | | |14.x |14.1.0 - |None | | |Dynacache | | | |14.1.5 | | | | | | +------+--------------+----------+ | | | | |13.x |13.1.0 - |None | | | | | | |13.1.5 | | | | | +-------------+------+--------------+----------+--------+------+--------------+ | |17.x |17.0.0 |None | | | | | +------+--------------+----------+ | | | | |16.x |16.1.0 - |None | | | | | | |16.1.3 | | | |BaseOS | | +------+--------------+----------+ | |NodeJS, | |BIG-IP (all |15.x |15.1.0 - |None | | |tm_lib/ | |modules) | |15.1.6 | |Medium |5.9 |tmm_zlib, | | +------+--------------+----------+ | |rpmbuild, | | |14.x |14.1.0 - |None | | |Dynacache | | | |14.1.5 | | | | | | +------+--------------+----------+ | | | | |13.x |13.1.0 - |None | | | | | | |13.1.5 | | | | | +-------------+------+--------------+----------+--------+------+--------------+ | | | | | | |BaseOS | | |8.x |8.0.0 - 8.2.0 |None | | |NodeJS, | |BIG-IQ | | | | | |tm_lib/ | |Centralized +------+--------------+----------+Medium |5.9 |tmm_zlib, | |Management | | | | | |rpmbuild, | | |7.x |7.0.0 - 7.1.0 |None | | |Dynacache | | | | | | | | | +-------------+------+--------------+----------+--------+------+--------------+ |F5OS-A |1.x |1.1.0 |None |Medium |5.5 |rsync, zlib | | | |1.0.0 - 1.0.1 | | | |rpm package | +-------------+------+--------------+----------+--------+------+--------------+ | | |1.3.0 - 1.3.2 | | | |rsync, zlib | |F5OS-C |1.x |1.2.0 - 1.2.2 |None |Medium |5.5 |rpm package | | | |1.1.0 - 1.1.4 | | | | | +-------------+------+--------------+----------+--------+------+--------------+ |Traffix SDC |5.x |5.2.0 |None |High |8.2 |zlib package | | | |5.1.0 | | | | | +-------------+------+--------------+----------+--------+------+--------------+ ^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 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 upgrading 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 The following mitigations are currently available. Additional mitigations may become available in the future as this security advisory is investigated further. BIG-IP BaseOS, Dynacache, tm_lib/tmm_zlib, NodeJS Disable HTTP Compression. o Disable HTTP compression in HTTP compression profiles. For more information, refer to K15434: Overview of the HTTP Compression profile. o Disable compression in iRules. For more information, refer to COMPRESS commands in Clouddocs. rpmbuild Limit access to the Command Line Interface (CLI) to only trusted users over trusted networks. For more information, refer to K5380: Specifying allowable IP ranges for SSH access and K13092: Overview of securing access to the BIG-IP system. BIG-IP APM Clients Disable compression in network access and connectivity profiles. For more information, refer to K12524516: APM Network Access (VPN) compression causes CPU usage higher. BIG-IQ rpmbuild Limit access to the Command Line Interface (CLI) to only the trusted users over trusted networks. For more information, refer to K5380: Specifying allowable IP ranges for SSH access and K27500409: Overview of securing access to the BIG-IQ system. 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 software lifecycle policy o K9502: BIG-IP hotfix and point release matrix o K13123: Managing BIG-IP product hotfixes (11.x - 17.x) o K15106: Managing BIG-IQ product hotfixes o K15113: BIG-IQ hotfix and point release matrix o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM systems (11.4.x and later) 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. 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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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