The PJSIP Channel Driver in Asterisk Open Source before 12.3.1 allows
remote attackers to cause a denial of service (deadlock) by terminating a
subscription request before it is complete, which triggers a SIP
transaction timeout.
downloads.asterisk.org/pub/security/AST-2014-008.html
packetstormsecurity.com/files/127090/Asterisk-Project-Security-Advisory-AST-2014-008.html
launchpad.net/bugs/cve/CVE-2014-4048
nvd.nist.gov/vuln/detail/CVE-2014-4048
security-tracker.debian.org/tracker/CVE-2014-4048
www.cve.org/CVERecord?id=CVE-2014-4048