National Vulnerability Database (CVE-2012-3553) Chan_skinny.c in the Skinny (aka SCCP) channel driver in Asterisk Open Source 10.x before 10.5.1 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by sending a Station Key Pad Button message and closing a connection in off-hook mode, a related issue to CVE-2012-2948.
Description Per: 'CWE-476: NULL Pointer Dereference' CERT - United States Computer Emergency Readiness Team. Stunnel: stunnel - multiplatform SSL tunneling proxy.