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CVE Request -- Asterisk AST-2012-001 / Remote DoS while processing crypto line for media stream with non-existing RTP
From: Jan Lieskovsky <jlieskov () redhat com>
Date: Fri, 20 Jan 2012 16:46:42 +0100

Hello Kurt, Steve, vendors,

  a denial of service flaw was found in the way asterisk processed certain
requests to negotiate secure video stream, when the res_srtp Asterisk module
has been loaded and video support has not been enabled. A remote attacker could
provide a specially-crafted media stream negotiation request, which once
processed by Asterisk would lead to asterisk daemon crash by processing crypto
line for such media stream.

References:
[1] http://downloads.asterisk.org/pub/security/AST-2012-001.html
[2] https://issues.asterisk.org/jira/browse/ASTERISK-19202
[3] https://bugzilla.redhat.com/show_bug.cgi?id=783487

Upstream patch against the v1.8.x branch:
[4] http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff

Upstream patch against the v1.10.x branch:
[5] http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff

Could you allocate a CVE identifier for this?

Thank you && Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team


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