Asterisk Project Security Advisory – AST-2017-004

Asterisk Project Security Advisory - A remote memory exhaustion can be triggered by sending an SCCP packet to Asterisk system with chan_skinny enabled that is larger than the length of the SCCP header but smaller than the packet length specified in the header. The loop that reads the rest of the packet does not detect that the call to read() returned end-of-file before the expected number of bytes and continues infinitely. The partial data message logging in that tight loop causes Asterisk to exhaust all available memory.