Bug 521164 - (CVE-2009-2346) CVE-2009-2346 asterisk: IAX2 DoS vulnerability (AST-2009-006)
CVE-2009-2346 asterisk: IAX2 DoS vulnerability (AST-2009-006)
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 521165
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Reported: 2009-09-03 20:22 EDT by Vincent Danen
Modified: 2009-10-27 14:21 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2009-10-27 14:21:31 EDT
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Description Vincent Danen 2009-09-03 20:22:53 EDT
The Asterisk development team has released new versions of Asterisk for 1.2.x, 1.4.x, 1.6.0.x and 1.6.1.x that correct an IAX2 denial of service vulnerability.  The security advisory (AST-2009-006) [1] indicates that and correct the vulnerability.

This vulnerability affects all versions of Asterisk prior to 1.2.35,,, adn  Package updates for Fedora are required; apparently this changes the IAX2 protocol as well so I'm not sure if a backport is feasible.

[1] http://downloads.asterisk.org/pub/security/AST-2009-006.html
Comment 2 Jan Lieskovsky 2009-09-09 10:17:41 EDT
MITRE's CVE-2009-2346 record:

The IAX2 protocol implementation in Asterisk Open Source 1.2.x before
1.2.35, 1.4.x before, 1.6.0.x before, and 1.6.1.x
before; Business Edition B.x.x before B.2.5.10, C.2.x before
C.2.4.3, and C.3.x before C.3.1.1; and s800i 1.3.x before
allows remote attackers to cause a denial of service (call-number
exhaustion) by initiating many IAX2 message exchanges, a related issue
to CVE-2008-3263.

Comment 3 Fedora Update System 2009-09-25 16:04:52 EDT
asterisk- has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2009-09-25 16:09:42 EDT
asterisk- has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

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