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Home arrow SecurityAlert Database

Arrow  Topic :

Multiple problems in SIP channel parser handling response codes


Arrow  SecurityAlert : 2644
Arrow  CVE : CVE-2007-2297
Arrow  SecurityRisk : Low  Security Risk Low  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : No
Arrow  Credit : Kevin P. Fleming
Arrow  Published : 28.04.2007

Arrow  Affected Software : Asterisk




Arrow  Advisory Content :  

> 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 (at) digium (dot) com [email
concealed] |
>
+-----------------------------------------------------------------------
-+
>
>
+-----------------------------------------------------------------------
-+
> | 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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