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Debian LTS Advisory DLA-2733-1                [email protected]
https://www.debian.org/lts/security/                      Markus Koschany
August 05, 2021                               https://wiki.debian.org/LTS
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Package        : tomcat8
Version        : 8.5.54-0+deb9u7
CVE ID         : CVE-2021-30640 CVE-2021-33037
Debian Bug     : 991046 991046

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

CVE-2021-30640

   A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to
   authenticate using variations of a valid user name and/or to bypass some of
   the protection provided by the LockOut Realm.

CVE-2021-33037

   Apache Tomcat did not correctly parse the HTTP transfer-encoding request
   header in some circumstances leading to the possibility to request
   smuggling when used with a reverse proxy. Specifically: - Tomcat
   incorrectly ignored the transfer encoding header if the client declared it
   would only accept an HTTP/1.0 response; - Tomcat honoured the identify
   encoding; and - Tomcat did not ensure that, if present, the chunked
   encoding was the final encoding.

For Debian 9 stretch, these problems have been fixed in version
8.5.54-0+deb9u7.

We recommend that you upgrade your tomcat8 packages.

For the detailed security status of tomcat8 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/tomcat8

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