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[SECURITY] [DSA 5667-1] tomcat9 security update

Posted on 19 April 2024
Debian Security Advisory

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Debian Security Advisory DSA-5667-1 security@debian.org
https://www.debian.org/security/ Markus Koschany
April 19, 2024 https://www.debian.org/security/faq
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Package : tomcat9
CVE ID : CVE-2023-46589 CVE-2024-23672 CVE-2024-24549
Debian Bug : 1057082 1066877 1066878

Several security vulnerabilities have been discovered in the Tomcat
servlet and JSP engine.


Tomcat 9 did not correctly parse HTTP trailer headers. A trailer header
that exceeded the header size limit could cause Tomcat to treat a single
request as multiple requests leading to the possibility of request
smuggling when behind a reverse proxy.


Denial of Service due to improper input validation vulnerability for
HTTP/2. When processing an HTTP/2 request, if the request exceeded any of
the configured limits for headers, the associated HTTP/2 stream was not
reset until after all of the headers had been processed.


Denial of Service via incomplete cleanup vulnerability. It was possible
for WebSocket clients to keep WebSocket connections open leading to
increased resource consumption.

For the oldstable distribution (bullseye), these problems have been fixed
in version 9.0.43-2~deb11u10.

We recommend that you upgrade your tomcat9 packages.

For the detailed security status of tomcat9 please refer to
its security tracker page at:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org