CVE-2018-17281

Name	CVE-2018-17281
Description	There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.
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-1523-1, DSA-4320-1
Debian Bugs	909554

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
asterisk (PTS)	buster	1:16.2.1~dfsg-1+deb10u2	fixed
	buster (security)	1:16.28.0~dfsg-0+deb10u4	fixed
	bullseye	1:16.28.0~dfsg-0+deb11u3	fixed
	bullseye (security)	1:16.28.0~dfsg-0+deb11u4	fixed
	sid	1:20.6.0~dfsg+~cs6.13.40431414-2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
asterisk	source	jessie	1:11.13.1~dfsg-2+deb8u6	DLA-1523-1
asterisk	source	stretch	1:13.14.1~dfsg-2+deb9u4	DSA-4320-1
asterisk	source	(unstable)	1:13.23.1~dfsg-1		909554

https://downloads.asterisk.org/pub/security/AST-2018-009.html
:https://issues.asterisk.org/jira/browse/ASTERISK-28013