Asterisk Remote Crash Vulnerability in SIP Channel Driver (AST-2012-006)

According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a vulnerability that could allow a remote attacker to crash the server. This issue could be exploited by sending an UPDATE over a SIP channel after the channel dialog has been...

CVE-2007-4455: Undefined Security Weakness

The SIP channel driver chansip in Asterisk Open Source 1.4.x before 1.4.11, AsteriskNOW before beta7, Asterisk Appliance Developer Kit 0.x before 0.8.0, and s800i Asterisk Appliance 1.x before 1.0.3 allows remote attackers to cause a denial of service memory exhaustion via a SIP dialog that cause...

Asterisk VoIP server Skinny protocol resources aexhaustions

SIP dialog history is stored in memory regardless of settings, leading to memory exhaustion...