Debian 9819 Published by

A tomcat9 security update has been released for Debian GNU/Linux 10 LTS to address two security vulnerabilities.

DLA 3384-1: tomcat9 security update

Debian LTS Advisory DLA-3384-1 Markus Koschany
April 05, 2023

Package : tomcat9
Version : 9.0.31-1~deb10u8
CVE ID : CVE-2022-42252 CVE-2023-28708
Debian Bug : 1033475

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


Apache Tomcat was configured to ignore invalid HTTP headers via setting
rejectIllegalHeader to false. Tomcat did not reject a request containing an
invalid Content-Length header making a request smuggling attack possible if
Tomcat was located behind a reverse proxy that also failed to reject the
request with the invalid header.


When using the RemoteIpFilter with requests received from a reverse proxy
via HTTP that include the X-Forwarded-Proto header set to https, session
cookies created by Apache Tomcat did not include the secure attribute. This
could result in the user agent transmitting the session cookie over an
insecure channel.

For Debian 10 buster, these problems have been fixed in version

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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: