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Gentoo: High Risk of Systemd Heap Exploit as of 202003-20 Update

A heap use-after-free flaw in systemd at worst might allow an attacker to execute arbitrary code.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202003-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: systemd: Heap use-after-free Date: March 15, 2020 Bugs: #708806 ID: 202003-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A heap use-after-free flaw in systemd at worst might allow an attacker to execute arbitrary code. Background ========= A system and service manager. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-apps/systemd < 244.3 > = 244.3 Description ========== It was found that systemd incorrectly handled certain Polkit queries. Impact ===== A local unprivileged user, by sending a specially crafted Polkit query, could possibly execute arbitrary code with the privileges of the process, escalate privileges or cause a Denial of Service condition. Workaround ========= There is no known workaround at this time. Resolution ========= All systemd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =sys-apps/systemd-244.3" References ========= [ 1 ] CVE-2020-1712 https://nvd.nist.gov/vuln/detail/CVE-2020-1712 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-20 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality andsecurity 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 2020 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/ . A memory corruption flaw in systemd leads to a use-after-free vulnerability, enabling remote attackers to run arbitrary commands, posing risks for Gentoo users. Immediate updates are advised. systemd security,gentoo exploit,heap use-after-free,polkit risk. . LinuxSecurity.com Team

Mar 15, 2020 Gentoo