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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2022.0229.2 OpenSSL Critical Patch Update for 3.0.x 2 November 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSL Operating System: macOS UNIX variants (UNIX, Linux, OSX) Windows Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-3786 CVE-2022-3602 Revision History: November 2 2022: OpenSSL advisory released with vulnerability and mitigation details October 28 2022: Initial Release OVERVIEW The OpenSSL Project has announced that OpenSSL version 3.0.7 is scheduled for Tuesday, November 1 2022 between 1300-1700 UTC [1][2]. UPDATE 2/10/2022: Official advisory with CVE identifiers (CVE-2022-3602, CVE-2022-3786) and vulnerability details released by OpenSSL Project on 1/11/2022 [4][5]. IMPACT This update is a security-fix release and includes a patch for a critical vulnerability in the open source cryptography and secure communication toolkit [2]. UPDATE 2/10/2022: Vulnerability rating reduced from CRITICAL to HIGH, but may still lead to remote code execution or crash on certain platforms and configurations [4][5]. MITIGATION The update will only affect OpenSSL 3.0.x [1] [2]. For most systems, you will be able to use the below OpenSSL command line utility to know the version; % openssl version [3] AusCERT encourages OpenSSL users to take note of the announcement and be prepared. UPDATE 2/10/2022: The OpenSSL Project advises users of versions 3.0.0 - 3.0.6 to upgrade to 3.0.7 as soon as possible [5]. They also note that users operating TLS servers should consider disabling TLS client authentication, if it is being used, until fixes are applied [5]. REFERENCES [1] Forthcoming OpenSSL Releases https://mta.openssl.org/pipermail/openssl-announce/2022-October/000238.html [2] OpenSSL to Patch First Critical Vulnerability Since 2016 https://www.securityweek.com/openssl-patch-first-critical-vulnerability-2016 [3] Upcoming Critical OpenSSL Vulnerability: What will be Affected? https://isc.sans.edu/forums/diary/Upcoming+Critical+OpenSSL+Vulnerability+What+will+be+Affected/29192 [4] OpenSSL Security Advisory [01 November 2022] https://www.openssl.org/news/secadv/20221101.txt [5] CVE-2022-3786 and CVE-2022-3602: X.509 Email Address Buffer Overflows https://www.openssl.org/blog/blog/2022/11/01/email-address-overflows/ AusCERT has made every effort to ensure that the information contained in this document is accurate. However, the decision to use the information described is the responsibility of each user or organisation. 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. =========================================================================== 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/ iQIVAwUBY2H8uskNZI30y1K9AQiIpg//WfsX5u+T0uBXtQy001J3ROI0USb1WTqm YlHPX5Jlg6fMco8dfwaLexVHWMmOnHj3Zx/m30VzZqEnOr/MUEjZ5TCo3ls04Jrd 6adJk0ZYd4I5Loy/edsTxGvq0kWO1ZbNCkaJfhlkBqf5/oWc8k18HtH4jMxBB9Nw uUO83JJIgrbxrjyITnRegtcOp4YhgkfTJ9jNUhJ4Sh9SLiL5F2kVWL+fyI6v4SIh n0YbKgZoPxLVyuV/zoYj/mEuSd7a2SAgUitBunrYnk6592wV/vixYtSzQCunaDK0 CtazCnim4Q6b9AyN1xJ6CJVQaB/9ldSWWtGD718UeJwOFYLziPeE1IgXmYbEtYPD XnlHp/ROFBaRZ2ySPo6P8GdGpYpCkMdnqXmANqkhQ3CtP2ruqAffvYvEfYHuDmyl oDMi/SgYm3HDFtCVU/S08uaPIfiFM7XHcYxa1TUXwvSYTfY1+7hObG0MDl33jJRR Hxh085wlQjrFySJNv7EfM9lkgeMNTE2fO5hkDAILl41HQcvW5gpieAnE1vW24qWQ vtz00zA0qX94YztgxgXolgBPiB18jjEQT1MmJYyHxSVmUM0KGcvSxJYwTgYS5i3E yM2OebWR0dDymk+8yBC2CJFWXYxE3gcQrWCrKwg1f9SDa5jp8BczhZmQNOzE/zQe waIxfh0AiOg= =soGg -----END PGP SIGNATURE-----