- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201401-23 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: sudo: Privilege escalation Date: January 21, 2014 Bugs: #459722 ID: 201401-23 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in sudo which could result in privilege escalation. Background ========== sudo allows a system administrator to give users the ability to run commands as other users. Access to commands may also be granted on a range to hosts. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-admin/sudo < 1.8.6_p7 >= 1.8.6_p7 Description =========== Multiple vulnerabilities have been found in sudo: * sudo does not correctly validate the controlling terminal on a system without /proc or when the tty_tickets option is enabled. * sudo does not properly handle the clock when it is set to the epoch. Impact ====== A local attacker with sudo privileges could connect to the stdin, stdout, and stderr of the terminal of a user who has authenticated with sudo, allowing the attacker to hijack the authorization of the other user. Additionally, a local or physically proximate attacker could set the system clock to the epoch, bypassing time restrictions on sudo authentication. Workaround ========== There is no known workaround at this time. Resolution ========== All sudo users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.6_p7" References ========== [ 1 ] CVE-2013-1775 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1775 [ 2 ] CVE-2013-1776 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1776 [ 3 ] CVE-2013-2776 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2776 [ 4 ] CVE-2013-2777 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2777 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201401-23.xml 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 2014 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. http://creativecommons.org/licenses/by-sa/2.5