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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1985 GNU C library strxfrm/strcoll overflow vulnerabilities 4 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 Products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade Original Bulletin: https://support.f5.com/csp/article/K16416 - --------------------------BEGIN INCLUDED TEXT-------------------- K16416:GNU C library strxfrm/strcoll overflow vulnerabilities Security Advisory Original Publication Date: 24 Jul, 2015 Latest Publication Date: 04 Jun, 2019 Security Advisory Description o The GNU C (glibc) strxfrm() function is prone to a remote integer-overflow vulnerability that leads to buffer overflow vulnerability. o The GNU C (glibc) strcoll() function is prone to a stack-based buffer-overflow vulnerability. Impact A locally authenticated attacker could run code that exposes the security flaws in glibc. The BIG-IP code contains the vulnerable functions; however, the functions are not used in a manner that exposes the vulnerabilities in the default configuration. Security Advisory Status F5 Product Development has assigned ID 510859 (BIG-IP), ID 515231 (BIG-IQ), and ID 515232 (Enterprise Manager) to these vulnerabilities. Additionally, BIG-IP iHealth may list Heuristic H515693 on the Diagnostics > Identified > Low page. 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 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 | |CVSSv2|Vulnerable| |Product |Branch|known to |introduced|Severity|score^|component | | | |be |in | |1 |or feature| | | |vulnerable| | | | | +---------------------+------+----------+----------+--------+------+----------+ | |13.x |None |Not | | | | |BIG-IP (LTM, AAM, | | |applicable| | | | |AFM, Analytics, APM, +------+----------+----------+ | | | |ASM, DNS, Edge |12.x |12.0.0 |12.1.0 |Medium |2.6 |glibc | |Gateway, FPS, GTM, | | |12.0.0 HF2| | | | |Link Controller, PEM,+------+----------+----------+ | | | |WebAccelerator) |11.x |11.0.0 - |None | | | | | | |11.6.4 | | | | | +---------------------+------+----------+----------+--------+------+----------+ | |3.x |3.0.0 - |None | | | | | | |3.1.1 | | | | | |Enterprise Manager +------+----------+----------+Medium |2.6 |glibc | | |2.x |2.1.0 - |None | | | | | | |2.3.0 | | | | | +---------------------+------+----------+----------+--------+------+----------+ | |6.x |None |Not | | | | | | | |applicable| | | | |BIG-IQ Centralized +------+----------+----------+ | | | |Management |5.x |5.0.0 - |5.2.0 |Medium |2.6 |glibc | | | |5.1.0 | | | | | | +------+----------+----------+ | | | | |4.x |4.6.0 |None | | | | +---------------------+------+----------+----------+--------+------+----------+ |F5 iWorkflow |2.x |2.0.0 |None |Medium |2.6 |glibc | +---------------------+------+----------+----------+--------+------+----------+ | |4.x |4.0.0 - |None | | | | | | |4.1.0 | | | | | |Traffix SDC +------+----------+----------+Low |None |glibc | | |3.x |3.3.2 - |None | | | | | | |3.5.1 | | | | | +---------------------+------+----------+----------+--------+------+----------+ ^1The CVSSv2 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 the previous table lists a version in the Versions known to be not vulnerable column, you can eliminate this vulnerability by upgrading to the listed version. If the listed version is older than the version you are currently running, or if the table does not list any version in the column, then no upgrade candidate currently exists. Mitigation To mitigate this vulnerability, you should permit management access to F5 products only over a secure network, and restrict command line access for affected systems to trusted users. For more information, refer to K13309: Restricting access to the Configuration utility by source IP address (11.x - 14.x) and K13092: Overview of securing access to the BIG-IP system. Supplemental Information o K9970: Subscribing to email notifications regarding F5 products o K9957: Creating a custom RSS feed to view new and updated documents o K4918: Overview of the F5 critical issue hotfix policy o K4602: Overview of the F5 security vulnerability response policy o K167: Downloading software and firmware from F5 o K13123: Managing BIG-IP product hotfixes (11.x - 13.x) o K9502: BIG-IP hotfix and point release matrix - --------------------------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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