35368 : Asterisk T.38 SDP Parser chan_sip.c process_sdp Function Overflow
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
5	947	over 4 years ago	over 3 years ago	0 times	90%

Timeline

Disclosure Date	Exploit Publish Date
2007-04-25	2007-04-25

Keywords

ASA-2007-010

Description

A remote overflow exists in Asterisk. The application fails to verify proper boundary for the 'T38FaxRateManagement' and 'T38FaxUdpEC' parameters resulting in a stack based overflow. With a specially crafted request, an attacker can cause arbitrary code execution resulting in a loss of integrity.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Public
Disclosure: OSVDB Verified, Vendor Verified

Technical

This vulnerability is only present when T38 support is enabled in the configuration. This option is disabled by default.

Solution

Upgrade to Asterisk version 1.4.3, AsteriskNOW version beta 6 and Asterisk Appliance Developer Kit version 0.4.0 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Digium	Asterisk	1.4.1
		1.4.2
		1.4.0
	Asterisk Appliance Developer Kit	0.3.2a
		0.2.0
	AsteriskNOW	beta 5

References

Security Tracker: 1017951
CVE ID: 2007-2293 (see also: NVD)
Bugtraq ID: 23648
Secunia Advisory ID: 24977
ISS X-Force ID: 33895
Related OSVDB ID: 35369
VUPEN Advisory: ADV-2007-1534
Keyword: ASA-2007-010
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2007-04/0442.html
http://archives.neohapsis.com/archives/bugtraq/2007-07/0030.html
Vendor Specific News/Changelog Entry: http://ftp.digium.com/pub/asa/ASA-2007-010.pdf

Tools & Filters

Snort	14608 14609
	25671

Manual Testing Notes

Credit

Barrie Dempster - barriengssoftware.com - NGS Software

CVSSv2 Score

CVSSv2 Base Score = 7.6
Source: nvd.nist.gov | Generated: 2007-04-27 | Disagree?

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

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