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Gentoo: GLSA-201405-19 Normal: Threat of Code Execution in MCrypt

Multiple vulnerabilities have been found in MCrypt, allowing attackers to execute arbitrary code or cause Denial of Service.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201405-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: MCrypt: User-assisted execution of arbitrary code Date: May 18, 2014 Bugs: #434112, #440778 ID: 201405-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Multiple vulnerabilities have been found in MCrypt, allowing attackersto execute arbitrary code or cause Denial of Service. Background ========= MCrypt is a replacement of the old unix crypt(1) utility. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-crypt/mcrypt < 2.6.8-r2 > = 2.6.8-r2 Description ========== Multiple vulnerabilities have been discovered in MCrypt: * A boundary error in MCrypt could cause a stack-based buffer overflow (CVE-2012-4409). * MCrypt contains multiple format string errors (CVE-2012-4426). * MCrypt does not properly handle long file names, which could cause a stack-based buffer overflow (CVE-2012-4527). Impact ===== A remote attacker could entice a user to open a specially crafted file using MCrypt, 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 MCrypt users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-crypt/mcrypt-2.6.8-r2" References ========= [ 1 ] CVE-2012-4409 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4409 [ 2 ] CVE-2012-4426 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4426 [ 3 ] CVE-2012-4527 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4527 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201405-19 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 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. https://creativecommons.org/licenses/by-sa/2.5/ . MCrypt weaknesses can lead to remote code execution or service disruption; immediate patching is essential. Further details are available in the Gentoo advisory.. MCrypt Advisory, Arbitrary Code Execution, Gentoo Security Update. . LinuxSecurity.com Team

May 18, 2014 Gentoo