CVE-2023-41081

Name	CVE-2023-41081
Description	Important: Authentication Bypass CVE-2023-41081 The mod_jk component of Apache Tomcat Connectors in some circumstances, such as when a configuration included "JkOptions +ForwardDirectories" but the configuration did not provide explicit mounts for all possible proxied requests, mod_jk would use an implicit mapping and map the request to the first defined worker. Such an implicit mapping could result in the unintended exposure of the status worker and/or bypass security constraints configured in httpd. As of JK 1.2.49, the implicit mapping functionality has been removed and all mappings must now be via explicit configuration. Only mod_jk is affected by this issue. The ISAPI redirector is not affected. This issue affects Apache Tomcat Connectors (mod_jk only): from 1.2.0 through 1.2.48. Users are recommended to upgrade to version 1.2.49, which fixes the issue. History 2023-09-13 Original advisory 2023-09-28 Updated summary
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-3580-1, ELA-960-1
Debian Bugs	1051956

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libapache-mod-jk (PTS)	jessie, jessie (lts)	1:1.2.46-0+deb8u3	fixed
	stretch (security)	1:1.2.46-0+deb9u1	vulnerable
	stretch (lts), stretch	1:1.2.46-0+deb9u2	fixed
	buster, buster (lts)	1:1.2.46-1+deb10u3	fixed
	buster (security)	1:1.2.46-1+deb10u2	fixed
	bullseye	1:1.2.48-1+deb11u1	fixed
	bullseye (security)	1:1.2.48-1+deb11u2	fixed
	bookworm	1:1.2.48-2+deb12u1	fixed
	sid, trixie	1:1.2.49-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libapache-mod-jk	source	jessie	1:1.2.46-0+deb8u2	ELA-960-1
libapache-mod-jk	source	stretch	1:1.2.46-0+deb9u2	ELA-960-1
libapache-mod-jk	source	buster	1:1.2.46-1+deb10u2	DLA-3580-1
libapache-mod-jk	source	bullseye	1:1.2.48-1+deb11u1
libapache-mod-jk	source	bookworm	1:1.2.48-2+deb12u1
libapache-mod-jk	source	(unstable)	1:1.2.49-1		1051956

Notes

https://lists.apache.org/thread/rd1r26w7271jyqgzr4492tooyt583d8b
http://www.openwall.com/lists/oss-security/2023/09/13/2
https://tomcat.apache.org/security-jk.html#Fixed_in_Apache_Tomcat_JK_Connector_1.2.49
https://github.com/apache/tomcat-connectors/commit/0095b6cb84f41313ee4c0364b49c766168790792