Asterisk ConfBridge State Transitions DoS (AST-2014-014)
Medium Nessus Plugin ID 79440
SynopsisA telephony application running on the remote host is affected by a denial of service vulnerability.
DescriptionAccording to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability. This flaw exists due to improper handling of state transitions which could allow a remote attacker to crash the application.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade to Asterisk 11.14.1 / 11.6-cert8 or apply the appropriate patch listed in the Asterisk advisory.