full-disclosure - Re: AST-2010-001: T.38 Remote Crash Vulnerability

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Date: Wed, 3 Feb 2010 10:12:49 +1100
From: Jeff Williams <jeffwillis30@...il.com>
To: Asterisk Security Team <security@...erisk.org>,
	full-disclosure@...ts.grok.org.uk
Subject: Re: AST-2010-001: T.38 Remote Crash Vulnerability

You deserve a pwnie award for the worst advisory template.

2010/2/3 Asterisk Security Team <security@...erisk.org>

>               Asterisk Project Security Advisory - AST-2010-001
>
>
> +------------------------------------------------------------------------+
>   |       Product        | Asterisk
>  |
>
> |----------------------+-------------------------------------------------|
>   |       Summary        | T.38 Remote Crash Vulnerability
> |
>
> |----------------------+-------------------------------------------------|
>   |  Nature of Advisory  | Denial of Service
> |
>
> |----------------------+-------------------------------------------------|
>   |    Susceptibility    | Remote unauthenticated sessions
> |
>
> |----------------------+-------------------------------------------------|
>   |       Severity       | Critical
>  |
>
> |----------------------+-------------------------------------------------|
>   |    Exploits Known    | No
>  |
>
> |----------------------+-------------------------------------------------|
>   |     Reported On      | 12/03/09
>  |
>
> |----------------------+-------------------------------------------------|
>   |     Reported By      | issues.asterisk.org users bklang and elsto
>  |
>
> |----------------------+-------------------------------------------------|
>   |      Posted On       | 02/03/10
>  |
>
> |----------------------+-------------------------------------------------|
>   |   Last Updated On    | February 2, 2010
>  |
>
> |----------------------+-------------------------------------------------|
>   |   Advisory Contact   | David Vossel < dvossel AT digium DOT com >
>  |
>
> |----------------------+-------------------------------------------------|
>   |       CVE Name       | CVE-2010-0441
> |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   | Description | An attacker attempting to negotiate T.38 over SIP can
>  |
>   |             | remotely crash Asterisk by modifying the FaxMaxDatagram
>  |
>   |             | field of the SDP to contain either a negative or
> |
>   |             | exceptionally large value. The same crash occurs when
>  |
>   |             | the FaxMaxDatagram field is omitted from the SDP as
>  |
>   |             | well.
>  |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   | Resolution | Upgrade to one of the versions of Asterisk listed in the
>  |
>   |            | "Corrected In" section, or apply a patch specified in the
> |
>   |            | "Patches" section.
>  |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   |                           Affected Versions
>  |
>
> |------------------------------------------------------------------------|
>   |             Product              | Release Series |
>  |
>
> |----------------------------------+----------------+--------------------|
>   |       Asterisk Open Source       |     1.6.x      | All versions
> |
>
> |----------------------------------+----------------+--------------------|
>   |    Asterisk Business Edition     |      C.3       | All versions
> |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   |                              Corrected In
>  |
>
> |------------------------------------------------------------------------|
>   |                 Product                  |           Release
> |
>
> |------------------------------------------+-----------------------------|
>   |           Asterisk Open Source           |          1.6.0.22
> |
>
> |------------------------------------------+-----------------------------|
>   |           Asterisk Open Source           |          1.6.1.14
> |
>
> |------------------------------------------+-----------------------------|
>   |           Asterisk Open Source           |           1.6.2.2
> |
>
> |------------------------------------------+-----------------------------|
>   |                                          |           C.3.3.2
> |
>
> +------------------------------------------------------------------------+
>
>
> +-------------------------------------------------------------------------+
>   |                                 Patches
> |
>
> |-------------------------------------------------------------------------|
>   |                             SVN URL
>  |Branch|
>
> |------------------------------------------------------------------+------|
>   |
> http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.0.diff|v1.6.0|<http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.0.diff%7Cv1.6.0%7C>
>
> |------------------------------------------------------------------+------|
>   |
> http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.1.diff|v1.6.1|<http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.1.diff%7Cv1.6.1%7C>
>
> |------------------------------------------------------------------+------|
>   |
> http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.2.diff|v1.6.2|<http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.2.diff%7Cv1.6.2%7C>
>
> +-------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   |     Links      | https://issues.asterisk.org/view.php?id=16634
> |
>   |                |
> |
>   |                | https://issues.asterisk.org/view.php?id=16724
> |
>   |                |
> |
>   |                | https://issues.asterisk.org/view.php?id=16517
> |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   | 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://downloads.digium.com/pub/security/.pdf and
>  |
>   | http://downloads.digium.com/pub/security/.html
> |
>
> +------------------------------------------------------------------------+
>
>
> +------------------------------------------------------------------------+
>   |                            Revision History
>  |
>
> |------------------------------------------------------------------------|
>   |      Date      |        Editor        |         Revisions Made
> |
>
> |----------------+----------------------+--------------------------------|
>   | 02/02/10       | David Vossel         | Initial release
>  |
>
> +------------------------------------------------------------------------+
>
>               Asterisk Project Security Advisory - AST-2010-001
>              Copyright (c) 2010 Digium, Inc. All Rights Reserved.
>  Permission is hereby granted to distribute and publish this advisory in
> its
>                           original, unaltered form.
>
> _______________________________________________
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