CVE-2023-45648

Name	CVE-2023-45648
Description	Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
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-3617-1, DSA-5521-1, DSA-5522-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
tomcat10 (PTS)	bookworm, bookworm (security)	10.1.6-1+deb12u2	fixed
	trixie	10.1.33-1	fixed
	sid	10.1.34-1	fixed
tomcat9 (PTS)	bullseye (security), bullseye	9.0.43-2~deb11u10	fixed
	bookworm	9.0.70-2	fixed
	sid, trixie	9.0.95-1	fixed

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

Package	Type	Release	Fixed Version	Origin
tomcat10	source	bookworm	10.1.6-1+deb12u1	DSA-5521-1
tomcat10	source	(unstable)	10.1.14-1
tomcat8	source	(unstable)	(unfixed)
tomcat9	source	buster	9.0.31-1~deb10u9	DLA-3617-1
tomcat9	source	bullseye	9.0.43-2~deb11u7	DSA-5522-1
tomcat9	source	(unstable)	9.0.70-2

Notes

https://www.openwall.com/lists/oss-security/2023/10/10/10
Starting with 9.0.70-2 Tomcat9 no longer ships the server stack, using that as the fixed version