Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3880
tomcat9 security update
15 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: tomcat9
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-42340
Reference: ESB-2021.3418
Original Bulletin:
http://www.debian.org/security/2021/dsa-5009
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Debian Security Advisory DSA-5009-1 security@debian.org
https://www.debian.org/security/ Markus Koschany
November 12, 2021 https://www.debian.org/security/faq
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Package : tomcat9
CVE ID : CVE-2021-42340
Apache Tomcat, the servlet and JSP engine, did not properly release an HTTP
upgrade connection for WebSocket connections once the WebSocket connection was
closed. This created a memory leak that, over time, could lead to a denial of
service via an OutOfMemoryError.
For the stable distribution (bullseye), this problem has been fixed in
version 9.0.43-2~deb11u3.
We recommend that you upgrade your tomcat9 packages.
For the detailed security status of tomcat9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/tomcat9
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
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===========================================================================
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