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Gentoo Linux Security Advisory GLSA 200405-12 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: CVS heap overflow vulnerability |
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Date: May 20, 2004 |
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Bugs: #51460 |
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ID: 200405-12 |
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Synopsis |
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======== |
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|
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CVS is subject to a heap overflow vulnerability allowing source |
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repository compromise. |
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|
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Background |
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========== |
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|
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CVS (Concurrent Versions System) is an open-source network-transparent |
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version control system. It contains both a client utility and a server. |
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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 dev-util/cvs <= 1.11.15 >= 1.11.16 |
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|
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Description |
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=========== |
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|
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Stefan Esser discovered a heap overflow in the CVS server, which can be |
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triggered by sending malicious "Entry" lines and manipulating the flags |
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related to that Entry. This vulnerability was proven to be exploitable. |
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|
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Impact |
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====== |
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|
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A remote attacker can execute arbitrary code on the CVS server, with |
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the rights of the CVS server. By default, Gentoo uses the "cvs" user to |
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run the CVS server. In particular, this flaw allows a complete |
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compromise of CVS source repositories. If you're not running a server, |
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then you are not vulnerable. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. All users are advised to |
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upgrade to the latest available version of CVS. |
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|
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Resolution |
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========== |
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All users running a CVS server should upgrade to the latest stable |
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version: |
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# emerge sync |
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# emerge -pv ">=dev-util/cvs-1.11.16" |
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# emerge ">=dev-util/cvs-1.11.16" |
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|
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References |
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========== |
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|
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[ 1 ] E-matters advisory 07/2004 |
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http://security.e-matters.de/advisories/072004.html |
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[ 2 ] CAN-2004-0396 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0396 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200405-12.xml |
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|
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Concerns? |
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========= |
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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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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2004 Gentoo Technologies, 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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http://creativecommons.org/licenses/by-sa/1.0 |
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