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Gentoo Linux Security Advisory GLSA 201405-19 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: MCrypt: User-assisted execution of arbitrary code |
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Date: May 18, 2014 |
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Bugs: #434112, #440778 |
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ID: 201405-19 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in MCrypt, allowing attackers |
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to execute arbitrary code or cause Denial of Service. |
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|
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Background |
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========== |
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|
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MCrypt is a replacement of the old unix crypt(1) utility. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 app-crypt/mcrypt < 2.6.8-r2 >= 2.6.8-r2 |
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|
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Description |
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=========== |
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|
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Multiple vulnerabilities have been discovered in MCrypt: |
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|
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* A boundary error in MCrypt could cause a stack-based buffer overflow |
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(CVE-2012-4409). |
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* MCrypt contains multiple format string errors (CVE-2012-4426). |
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* MCrypt does not properly handle long file names, which could cause a |
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stack-based buffer overflow (CVE-2012-4527). |
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|
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Impact |
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====== |
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|
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A remote attacker could entice a user to open a specially crafted file |
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using MCrypt, possibly resulting in execution of arbitrary code with |
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the privileges of the process or a Denial of Service condition. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All MCrypt users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-crypt/mcrypt-2.6.8-r2" |
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References |
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========== |
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[ 1 ] CVE-2012-4409 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4409 |
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[ 2 ] CVE-2012-4426 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4426 |
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[ 3 ] CVE-2012-4527 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4527 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201405-19.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2014 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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