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Mageia: 2021-0181 Urgent: Tor Memory Flaw and Authority Failure

The dump_desc() function that we used to dump unparseable information to disk, was called incorrectly in several places, in a way that could lead to excessive CPU usage (CVE-2021-28089). A bug in appending detached signatures to a pending consensus document could be . MGASA-2021-0180 - Updated tor packages fix security vulnerabilities Publication date: 12 Apr 2021 URL: https://advisories.mageia.org/MGASA-2021-0180.html Type: security Affected Mageia releases: 7, 8 CVE: CVE-2021-28089, CVE-2021-28090 The dump_desc() function that we used to dump unparseable information to disk, was called incorrectly in several places, in a way that could lead to excessive CPU usage (CVE-2021-28089). A bug in appending detached signatures to a pending consensus document could be used to crash a directory authority (CVE-2021-28090). References: - https://bugs.mageia.org/show_bug.cgi?id=28628 - https://blog.torproject.org/new-releases-with-security-fixes-tor-03514-0448-and-0457/ - https://www.cve.org/CVERecord?id=CVE-2021-28089 - https://www.cve.org/CVERecord?id=CVE-2021-28090 SRPMS: - 7/core/tor-0.3.5.14-1.mga7 - 8/core/tor-0.3.5.14-1.mga8 . The recent Arch Linux security notice ALAS-2021-0123 highlights significant memory leaks and OpenVPN connectivity problems.. Mageia Security Update, Tor Bug Fixes, Excessive CPU Usage, Directory Authority Crash. . Severity: Critical. LinuxSecurity.com Team

Apr 12, 2021 •Critical Mageia