CVE-2019-13161

Name	CVE-2019-13161
Description	An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2969-1
Debian Bugs	931981

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
asterisk (PTS)	jessie, jessie (lts)	1:11.13.1~dfsg-2+deb8u8	vulnerable
	stretch (security)	1:13.14.1~dfsg-2+deb9u6	fixed
	stretch (lts), stretch	1:13.14.1~dfsg-2+deb9u10	fixed
	buster, buster (lts)	1:16.28.0~dfsg-0+deb10u5	fixed
	buster (security)	1:16.28.0~dfsg-0+deb10u4	fixed
	bullseye	1:16.28.0~dfsg-0+deb11u4	fixed
	bullseye (security)	1:16.28.0~dfsg-0+deb11u5	fixed
	sid	1:22.0.0~dfsg+~cs6.14.60671435-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
asterisk	source	wheezy	(unfixed)	end-of-life
asterisk	source	stretch	1:13.14.1~dfsg-2+deb9u6		DLA-2969-1
asterisk	source	buster	1:16.2.1~dfsg-1+deb10u1
asterisk	source	(unstable)	1:16.2.1~dfsg-2	low		931981

Notes

[jessie] - asterisk <postponed> (Minor issue)
http://downloads.digium.com/pub/security/AST-2019-003.html
https://issues.asterisk.org/jira/browse/ASTERISK-28465