CVE-2014-2289
res/res_pjsip_exten_state.c in the PJSIP channel driver in Asterisk Open Source 12.x before 12.1.0 allows remote authenticated users to cause a denial of service (crash) via a SUBSCRIBE request without any Accept headers, which triggers an invalid pointer dereference.
Date published : 2014-04-18
http://downloads.asterisk.org/pub/security/AST-2014-004.html