FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

asterisk -- RTP/RTCP information leak

Affected packages
asterisk11 < 11.25.3
asterisk13 < 13.17.2


VuXML ID c2ea3b31-9d75-11e7-bb13-001999f8d30b
Discovery 2017-09-01
Entry 2017-09-19

The Asterisk project reports:

This is a follow up advisory to AST-2017-005.

Insufficient RTCP packet validation could allow reading stale buffer contents and when combined with the "nat" and "symmetric_rtp" options allow redirecting where Asterisk sends the next RTCP report.

The RTP stream qualification to learn the source address of media always accepted the first RTP packet as the new source and allowed what AST-2017-005 was mitigating. The intent was to qualify a series of packets before accepting the new source address.

The RTP/RTCP stack will now validate RTCP packets before processing them.


CVE Name CVE-2017-14099