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Mageia: 2018-0429 Severe: Python-Cryptography Tag Length Vulnerability

The python-cryptography and python-cryptography-vectors packages have been updated to version 2.3.1 and fixes the following security issue: 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 . MGASA-2018-0429 - Updated python-cryptography packages fix security vulnerability Publication date: 03 Nov 2018 URL: https://advisories.mageia.org/MGASA-2018-0429.html Type: security Affected Mageia releases: 6 CVE: CVE-2018-10903 The python-cryptography and python-cryptography-vectors packages have been updated to version 2.3.1 and fixes the following security issue: 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 can cause key leakage (CVE-2018-10903). References: - https://bugs.mageia.org/show_bug.cgi?id=23339 - https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./thread/VKC5JVSO26YBOAYNY4HDSDFREMO4DS67/ - https://www.cve.org/CVERecord?id=CVE-2018-10903 SRPMS: - 6/core/python-cryptography-2.3.1-1.mga6 - 6/core/python-cryptography-vectors-2.3.1-1.mga6 . Recent updates to the python-cryptography library in Mageia address a serious security vulnerability impacting tag verification and key safeguarding.. python-cryptography, security update, mageia, software patches. . Severity: Critical. LinuxSecurity.com Team

Nov 03, 2018 •Critical Mageia