29972 : Asterisk Skinny Channel Driver (chan_skinny) get_input Function Remote Overflow
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
2	265	over 3 years ago	over 2 years ago	0 times	100%

Timeline

Disclosure Date	Exploit Publish Date
2006-10-18	2006-10-19

Description

A remote overflow exists in Asterisk. The function get_input in chan_skinny.c fails to check integer values resulting in a heap overflow. With a specially crafted request, an attacker can cause the service to terminate or possibly execute arbitrary code.

Classification

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

Technical

Exploitation requires that "chan_skinny" is loaded.

Solution

Upgrade to version 1.0.12 or 1.2.13 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Digium	Asterisk	1.0.0
		1.0.1
		1.0.2
		1.0.3
		1.0.4
		1.0.5
		1.0.6
		1.0.7
		1.0.8
		1.0.9
		1.0.10
		1.0.11
		1.2.0
		1.2.1
		1.2.2
		1.2.3
		1.2.4
		1.2.5
		1.2.6
		1.2.7
		1.2.8
		1.2.9
		1.2.10
		1.2.11
		1.2.12

References

Security Tracker: 1017089
CVE ID: 2006-5444 (see also: NVD)
Bugtraq ID: 20617
Secunia Advisory ID: 22480 22651 22979 23212
Exploit Database: 2597
Milw0rm: 2597
SCIP VulDB ID: 2622
Related OSVDB ID: 29973
CERT VU: 521252
VUPEN Advisory: ADV-2006-4097
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2006-10/0311.html
Vendor Specific News/Changelog Entry: http://ftp.digium.com/pub/asterisk/releases/ChangeLog-1.0.12
http://ftp.digium.com/pub/asterisk/releases/ChangeLog-1.2.13
http://www.asterisk.org/node/109
Other Advisory URL: http://lists.suse.com/archive/suse-security-announce/2006-Nov/0006.html
http://www.gentoo.org/security/en/glsa/glsa-200610-15.xml
http://www.us.debian.org/security/2006/dsa-1229
Vendor URL: http://www.asterisk.org/

Tools & Filters

Snort	12359
	22878 22930 23790 27156

Credit

Adam Boileau - adam.boileausecurity-assessment.com - Security-Assessment.com

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2006-10-23 | 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.

None found at this time

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