38193 : Asterisk STUN Implementation RPT Port Malformed STUN Packet Remote DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
3	290	over 4 years ago	over 3 years ago	1 times	90%

Timeline

Disclosure Date	Vendor Solution Date
2007-07-17	2007-07-17

Keywords

AST-2007-017

Description

Asterisk contains a flaw that may allow a remote denial of service. The issue is triggered when malformed STUN packets are received on an active RTP port, and will result in loss of availability for the service.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Technical

This vulnerability is only present when chan_sip, chan_gtalk, chan_jingle, chan_h323, chan_mgcp, or chan_skinny channels are enabled on the system.

Solution

Upgrade to Asterisk version 1.4.8, AsteriskNOW version beta7, Asterisk Appliance Developer Kit 0.5.0, Asterisk s800i Appliance version 1.0.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Asterisk	Asterisk	1.4.8 (not affected)
		1.4.5
		1.4.7.1
		1.4.7
		1.4.1
		1.4.2
		1.4.3
		1.4.0
		1.4.4
		1.4.6
	Asterisk Appliance Developer Kit	0.5.0 (not affected)
		0.4.0
		0.3.2a
		0.2.0
	AsteriskNOW	beta7 (not affected)
		beta6
		beta5
		beta4
		beta3
		beta2
		beta1
	s800i	1.0.2 (not affected)
	s800i	1.0.1

References

Security Tracker: 1018407
CVE ID: 2007-3765 (see also: NVD)
Bugtraq ID: 24949 24950
Secunia Advisory ID: 26099 26602
ISS X-Force ID: 35466 35480
Related OSVDB ID: 38194 38195 38196
VUPEN Advisory: ADV-2007-2563
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2007-07/0180.html
Vendor Specific News/Changelog Entry: http://ftp.digium.com/pub/asa/ASA-2007-017.pdf
Other Advisory URL: http://lists.debian.org/debian-security-announce/debian-security-announce-2007/msg00120.html

Credit

Will Drewry - wadgoogle.com - Google Security Team

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2007-07-19 | 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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