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Message-ID: <462FA634.1040901@digium.com> Date: Wed, 25 Apr 2007 14:04:20 -0500 From: "Kevin P. Fleming" <kpfleming@...ium.com> To: bugtraq@...urityfocus.com Subject: ASA-2007-011: Multiple problems in SIP channel parser handling response codes > Asterisk Project Security Advisory - ASA-2007-011 > > +------------------------------------------------------------------------+ > | Product | Asterisk | > |--------------------+---------------------------------------------------| > | Summary | Multiple problems in SIP channel parser handling | > | | response codes | > |--------------------+---------------------------------------------------| > | Nature of Advisory | Denial of Service | > |--------------------+---------------------------------------------------| > | Susceptibility | Remote Unauthenticated Sessions | > |--------------------+---------------------------------------------------| > | Severity | Critical | > |--------------------+---------------------------------------------------| > | Exploits Known | No | > |--------------------+---------------------------------------------------| > | Reported On | March 20, 2007 | > |--------------------+---------------------------------------------------| > | Reported By | Mantis user ID 'qwerty1979' | > |--------------------+---------------------------------------------------| > | Posted On | April 24, 2007 | > |--------------------+---------------------------------------------------| > | Last Updated On | April 24, 2007 | > |--------------------+---------------------------------------------------| > | Advisory Contact | kpfleming@...ium.com | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Description | Multiple problems have been identified in the Asterisk | > | | SIP channel driver (chan_sip) when handling response | > | | packets from other SIP endpoints. | > | | | > | | If the response packets did not contain a valid response | > | | code in the first line of the UDP packet, the Asterisk | > | | SIP channel driver would fail to parse the packet | > | | properly and would cause the Asterisk process to die | > | | with a segmentation fault. This results in all active | > | | calls and other sessions being lost. | > | | | > | | More details about these issues can be found at | > | | http://bugs.digium.com/view.php?id=9313. | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Resolution | All users are urged to upgrade to the appropriate version | > | | of their Asterisk product listed in the 'Corrected In' | > | | section below. | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Affected Versions | > |------------------------------------------------------------------------| > | Product | Release | | > | | Series | | > |---------------------------+-------------+------------------------------| > | Asterisk Open Source | 1.0.x | has not been evaluated as | > | | | this release series is no | > | | | longer maintained | > |---------------------------+-------------+------------------------------| > | Asterisk Open Source | 1.2.x | all releases prior to 1.2.18 | > |---------------------------+-------------+------------------------------| > | Asterisk Open Source | 1.4.x | all releases prior to 1.4.3 | > |---------------------------+-------------+------------------------------| > | Asterisk Business Edition | A.x.x | all releases | > |---------------------------+-------------+------------------------------| > | Asterisk Business Edition | B.x.x | all releases prior to and | > | | | including B.1.3.2 | > |---------------------------+-------------+------------------------------| > | AsteriskNOW | pre-release | all releases prior to and | > | | | including Beta 5 | > |---------------------------+-------------+------------------------------| > | Asterisk Appliance | 0.x.x | all releases prior to 0.4.0 | > | Developer Kit | | | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Corrected In | > |------------------------------------------------------------------------| > | Product | Release | > |--------------------+---------------------------------------------------| > | Asterisk Open | 1.2.18 and 1.4.3, available from | > | Source | ftp://ftp.digium.com/pub/telephony/asterisk | > |--------------------+---------------------------------------------------| > | Asterisk Business | B.1.3.3, available from the Asterisk Business | > | Edition | Edition user portal on http://www.digium.com or | > | | via Digium Technical Support | > |--------------------+---------------------------------------------------| > | AsteriskNOW | Beta 6, when available from | > | | http://www.asterisknow.org, Beta 5 users can use | > | | use 'System Update' in the appliance control | > | | panel to update their version of AsteriskNOW | > |--------------------+---------------------------------------------------| > | Asterisk Appliance | 0.4.0, available from | > | Developer Kit | ftp://ftp.digium.com/pub/telephony/aadk | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Links | http://bugs.digium.com/view.php?id=9313 | > +------------------------------------------------------------------------+ > > +------------------------------------------------------------------------+ > | Asterisk Project Security Advisories are posted at | > | http://www.asterisk.org/security. | > | | > | This document may be superseded by later versions; if so, the latest | > | version will be posted at | > | http://www.asterisk.org/files/ASA-2007-011.pdf. | > +------------------------------------------------------------------------+ > > Asterisk Project Security Advisory - ASA-2007-011 > Copyright (c) 2007 Digium, Inc. All Rights Reserved. > Permission is hereby granted to distribute and publish this advisory in its > original, unaltered form.
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