- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202105-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: rxvt-unicode: User-assisted execution of arbitrary code Date: May 26, 2021 Bugs: #790782 ID: 202105-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability in rxvt-unicode may allow a remote attacker to execute arbitrary code. Background ========== rxvt-unicode (urxvt) is a clone of the rxvt terminal emulator. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-terms/rxvt-unicode < 9.22-r9 >= 9.22-r9 Description =========== It was discovered that rxvt-unicode did not properly handle certain escape sequences. Impact ====== A remote attacker could entice a user to run a program where attacker controls the output inside a rxvt terminal window, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround ========== There is no known workaround at this time. Resolution ========== All rxvt-unicode users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=x11-terms/rxvt-unicode-9.22-r9" References ========== [ 1 ] CVE-2021-33477 https://nvd.nist.gov/vuln/detail/CVE-2021-33477 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202105-17 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 security@gentoo.org 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