CVE-2018-16657

Name	CVE-2018-16657
Description	In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt_string_array core function for calculating a CRC hash for To tags. (An additional error is present in the check_via_address core function: this function also misses input validation.) This could result in denial of service and potentially the execution of arbitrary code.
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-1503-1, DSA-4292-1
Debian Bugs	908324

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
kamailio (PTS)	buster	5.2.1-1	fixed
	buster (security)	5.2.1-1+deb10u1	fixed
	bullseye	5.4.4-1	fixed
	bookworm	5.6.3-2	fixed
	sid, trixie	5.7.4-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
kamailio	source	jessie	4.2.0-2+deb8u5	DLA-1503-1
kamailio	source	stretch	4.4.4-2+deb9u3	DSA-4292-1
kamailio	source	(unstable)	5.1.4-1		908324

Notes

https://skalatan.de/blog/advisory-hw-2018-06
https://github.com/kamailio/kamailio/commit/ad68e402ece8089f133c10de6ce319f9e28c0692 (master)
https://github.com/kamailio/kamailio/commit/d67b2f9874ca23bd69f18df71b8f53b1b6151f6d (5.1)
https://github.com/kamailio/kamailio/commit/f07dabffef98c7088cdbc2bd695a4ae7a241b159 (5.0)