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Gentoo Linux Security Advisory GLSA 200606-15 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Asterisk: IAX2 video frame buffer overflow |
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Date: June 14, 2006 |
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Bugs: #135680 |
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ID: 200606-15 |
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Synopsis |
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======== |
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|
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Asterisk contains a bug in the IAX2 channel driver making it vulnerable |
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to the remote execution of arbitrary code. |
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|
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Background |
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========== |
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|
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Asterisk is an open source implementation of a telephone private branch |
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exchange (PBX). |
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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 net-misc/asterisk < 1.0.11_p1 >= 1.0.11_p1 |
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Description |
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=========== |
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|
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Asterisk fails to properly check the length of truncated video frames |
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in the IAX2 channel driver which results in a buffer overflow. |
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|
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Impact |
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====== |
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|
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An attacker could exploit this vulnerability by sending a specially |
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crafted IAX2 video stream resulting in the execution of arbitrary code |
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with the permissions of the user running Asterisk. |
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Workaround |
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========== |
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Disable public IAX2 support. |
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Resolution |
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========== |
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All Asterisk users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.0.11_p1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-2898 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2898 |
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[ 2 ] Corelabs Asterisk PBX truncated video frame vulnerability advisory |
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http://www.coresecurity.com/common/showdoc.php?idx=547&idxseccion=10 |
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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-200606-15.xml |
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|
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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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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 2006 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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