CVE-2020-28361

Name	CVE-2020-28361
Description	Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
kamailio (PTS)	bullseye	5.4.4-1	fixed
	bookworm	5.6.3-2	fixed
	sid, trixie	5.8.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
kamailio	source	(unstable)	5.4.0-1

Notes

[buster] - kamailio <no-dsa> (Minor issue)
[stretch] - kamailio <no-dsa> (Minor issue)
https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html