CVE-2023-38199

Name	CVE-2023-38199
Description	coreruleset (aka OWASP ModSecurity Core Rule Set) through 3.3.4 does not detect multiple Content-Type request headers on some platforms. This might allow attackers to bypass a WAF with a crafted payload, aka "Content-Type confusion" between the WAF and the backend application. This occurs when the web application relies on only the last Content-Type header. Other platforms may reject the additional Content-Type header or merge conflicting headers, leading to detection as a malformed header.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1041109

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
modsecurity-crs (PTS)	bullseye	3.3.0-1+deb11u1	vulnerable
	bullseye (security)	3.3.4-1~deb11u1	vulnerable
	bookworm	3.3.4-1	vulnerable
	forky, sid, trixie	3.3.7-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
modsecurity-crs	source	(unstable)	3.3.5-1			1041109

Notes

[bookworm] - modsecurity-crs <no-dsa> (Minor issue)
[bullseye] - modsecurity-crs <no-dsa> (Minor issue)
[buster] - modsecurity-crs <postponed> (Minor issue)
https://github.com/coreruleset/coreruleset/issues/3191
https://github.com/coreruleset/coreruleset/pull/3237