1. Ubuntu Security Notices
  2. USN-5360-1

USN-5360-1: Tomcat vulnerabilities

Publication date

31 March 2022

Overview

Several security issues were fixed in Tomcat.

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)

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)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal tomcat9 –  9.0.31-1ubuntu0.2
tomcat9-common –  9.0.31-1ubuntu0.2
libtomcat9-java –  9.0.31-1ubuntu0.2
libtomcat9-embed-java –  9.0.31-1ubuntu0.2
18.04 bionic tomcat9 –  9.0.16-3ubuntu0.18.04.2
tomcat9-common –  9.0.16-3ubuntu0.18.04.2
libtomcat9-java –  9.0.16-3ubuntu0.18.04.2
libtomcat9-embed-java –  9.0.16-3ubuntu0.18.04.2

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References

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