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TITLE:
Asterisk Skinny Channel Driver Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA49543

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49543/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49543

RELEASE DATE:
2012-06-15

DISCUSS ADVISORY:
http://secunia.com/advisories/49543/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/49543/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=49543

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in Asterisk, which can be exploited
by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to a NULL-pointer dereference error
in SCCP (Skinny) channel driver (channels/chan_skinny.c) when
handling termination of a client's connection and can be exploited to
cause a crash by closing a connection to the server in "Off Hook"
state.

The vulnerability is reported in versions prior to 10.5.1.

SOLUTION:
Update to version 10.5.1.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Christoph Hebeisen, TELUS Security Labs.

ORIGINAL ADVISORY:
http://downloads.asterisk.org/pub/security/AST-2012-009.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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