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USN-5360-1: Tomcat vulnerabilities

31 March 2022

Several security issues were fixed in Tomcat.

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Releases

Packages

  • tomcat9 - Apache Tomcat 9 - Servlet and JSP engine

Details

It was discovered that Tomcat incorrectly performed input verification.
A remote attacker could possibly use this issue to intercept sensitive
information. (CVE-2020-13943, CVE-2020-17527, CVE-2021-25122, CVE-2021-30640)

It was discovered that Tomcat did not properly deserialize untrusted data.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2020-9484, CVE-2021-33037)

It was discovered that Tomcat did not properly validate the input length. An
attacker could possibly use this to trigger an infinite loop, resulting in a
denial of service. (CVE-2021-25329, CVE-2021-41079)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-4448-1: tomcat8-admin, tomcat8-user, tomcat8-examples, libservlet3.1-java, tomcat8-common, tomcat8, libtomcat8-java, tomcat8-docs, libservlet3.1-java-doc
  • USN-4596-1: libtomcat9-java, tomcat9-docs, tomcat9-examples, libtomcat9-embed-java, tomcat9-admin, tomcat9-user, tomcat9, tomcat9-common