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Gentoo: 202101-04 Critical: Firefox Remote Code Execution Advisory

A use-after-free in Mozilla Firefox's SCTP handling may allow remote code execution.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202101-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Mozilla Firefox: Remote code execution Date: January 10, 2021 Bugs: #764161 ID: 202101-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A use-after-free in Mozilla Firefox's SCTP handling may allow remote code execution. Background ========= Mozilla Firefox is a popular open-source web browser from the Mozilla project. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-client/firefox < 84.0.2 > = 78.6.1:0/esr78 > = 84.0.2 2 www-client/firefox-bin < 84.0.2 > = 78.6.1:0/esr78 > = 84.0.2 ------------------------------------------------------------------- 2 affected packages Description ========== A use-after-free bug was discovered in Mozilla Firefox's handling of SCTP. Impact ===== A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround ========= There is no known workaround at this time. Resolution ========= All Firefox ESR users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v "> =www-client/firefox-78.6.1:0/esr78" All Firefox ESR binary users should upgrade to the latest version: #emerge --sync # emerge --ask --oneshot -v "> =www-client/firefox-bin-78.6.1:0/esr78" All Firefox users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =www-client/firefox-84.0.2" All Firefox binary users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =www-client/firefox-bin-84.0.2" References ========= [ 1 ] CVE-2020-16044 https://nvd.nist.gov/vuln/detail/CVE-2020-16044 [ 2 ] MFSA-2021-01 https://www.mozilla.org/en-US/security/advisories/mfsa2021-01/ Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202101-04 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2021 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5/ . The Gentoo Security Advisory GLSA 202101-04 addresses a vital vulnerability in Firefox that can lead to remote code execution. Users are strongly urged to apply updates without delay.. Gentoo Security Advisory, Firefox Exploit, Remote Code Issues. . Severity: Critical. LinuxSecurity.com Team

Jan 10, 2021 •Critical Gentoo