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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0949.2 When authentication is set to require, the Client SSL or Server SSL profile does not report an error when it has an associated invalid CRL 26 March 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Provide Misleading Information -- Existing Account Resolution: Patch/Upgrade Original Bulletin: https://support.f5.com/csp/article/K15732489 Revision History: March 26 2019: Added latest advisory update March 22 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K15732489:When authentication is set to require, the Client SSL or Server SSL profile does not report an error when it has an associated invalid CRL Security Advisory Original Publication Date: 22 Mar, 2019 Latest Publication Date: 26 Mar, 2019 Security Advisory Description When authentication is set to require, the Client SSL or Server SSL profile does not report an error when it has an associated invalid Certificate Revocation List (CRL). This issue occurs when all of the following conditions are met: o The Client SSL or Server SSL profile is associated with a virtual server. o The profile is associated with an invalid CRL that is not signed by a trusted Certificate Authority (CA). o The CRL issuer has the same subject name as one of the certs in the trusted CA. o The client or server certificate authentication is set to require. Impact An invalid CRL which has not been properly signed may be used. Symptoms As a result of this issue, you may encounter the following symptom: o An error is not reported for the invalid CRL. Security Advisory Status F5 Product Development has assigned ID 654368 to this issue. F5 has confirmed that this issue exists in the products listed in the Applies to (see versions) box, located in the upper-right corner of this article. For information about releases, point releases, or hotfixes that resolve this issue, refer to the following table. +------------------+-----------------+----------------------------------------+ |Type of fix |Fixes introduced |Related articles | | |in | | +------------------+-----------------+----------------------------------------+ | |13.1.0 | | |Release |13.0.1 |K2200: Most recent versions of F5 | | |11.6.4 |software | | |11.5.9 | | +------------------+-----------------+----------------------------------------+ |Point release/ |13.0.0 HF1 |K9502: BIG-IP hotfix and point release | |hotfix |12.1.3.4 |matrix | +------------------+-----------------+----------------------------------------+ Security Advisory Recommended Actions Workaround None Supplemental Information o K51812227: Understanding Security Advisory versioning o K41942608: Overview of AskF5 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 - 13.x) o K167: Downloading software and firmware from F5 o K9970: Subscribing to email notifications regarding F5 products - --------------------------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 iQIVAwUBXJlYlmaOgq3Tt24GAQjcAA//d3szCwPSLkUPrL8EcU/qciYOAK8SW5kd AumQs7Cb8mMLJCuWP7gneJLUjIidcfAEGaFojqUi+M3JR4+DWwC29AuA0+0lHvok DQ56ZxBf2FvUv9rE2RIPYUF10RRoH9ZZQhyL+XS7gChwsHeoBALh5lkFMIMTup+X aotQDpsDY7+zWBiSGch2kVQWA96eloZJ1Fg7Fm2yAkltdRWUVlCFIGRyRuJ7ORfb eYBAn6tbAyAR/5mHuR6kBJpU4/xGprwUSx5bO+315TNZTkbFo4iuKYd6Ri71pD4g VrVHYPvn5cn0y8KXJQJI5op8znltsgoFkQBfrQWzOIPVAkNiHa7wH8j0nLWMX8Gy 2VXVAtBUtWE0Q/QLLb0F9VLQNv+k00fBRHQcnOT+/DmjW87LcU//mHKrBFZ9ibWh lQav7dUl/lurkKGTYOoh8dw3iFeYb8KBaiDQ+S0N1bFjHwcC7kDGRtJSYMK6s9L2 S73C8T0LM/+z87DpN9DeZWBg3kD+aEZ4TGX4s2MY19lfCziuwR/EgJDlq5fFVDVe GIGd8mpA6DTMbDoP8Uthmppqg+jmDjWFwvYmk8r5Pq+ZF6nk3Cbn4Tuyb51rJAZV 8leAi+vUMA4A3jqXuE+kC53MQpgLUvaQ8cjFeietLY+OczbxXTP/HQFC9TINDOF/ 80F1jcPMyqc= =m0Xs -----END PGP SIGNATURE-----