SB2012070901 - Resource management error in Asterisk

Description

This security bulletin contains information about 1 security vulnerability.

1) Resource management error (CVE-ID: CVE-2012-3863)

The vulnerability allows a remote #AU# to perform service disruption.

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.

Remediation

Install update from vendor's website.

References

• http://downloads.asterisk.org/pub/security/AST-2012-010.html
• http://secunia.com/advisories/50687
• http://secunia.com/advisories/50756
• http://www.debian.org/security/2012/dsa-2550
• http://www.securityfocus.com/bid/54327
• https://issues.asterisk.org/jira/browse/ASTERISK-19992