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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3277 SUSE Security Update: Security update for python-cryptography 25 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: python-cryptography Publisher: SUSE Operating System: SUSE Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-10903 Reference: ESB-2018.2129 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20183392-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for python-cryptography ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3392-1 Rating: moderate References: #1101820 Cross-References: CVE-2018-10903 Affected Products: SUSE Linux Enterprise Module for Basesystem 15 ______________________________________________________________________________ An update that fixes one vulnerability is now available. Description: This update for python-cryptography fixes the following issues: - CVE-2018-10903: The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries could have caused key leakage (bsc#1101820). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Module for Basesystem 15: zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-2430=1 Package List: - SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x x86_64): python-cryptography-debuginfo-2.1.4-4.3.1 python-cryptography-debugsource-2.1.4-4.3.1 python2-cryptography-2.1.4-4.3.1 python2-cryptography-debuginfo-2.1.4-4.3.1 python3-cryptography-2.1.4-4.3.1 python3-cryptography-debuginfo-2.1.4-4.3.1 References: https://www.suse.com/security/cve/CVE-2018-10903.html https://bugzilla.suse.com/1101820 - --------------------------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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