Ubuntu 6943-1: Tomcat Security Advisory Updates
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in Tomcat. Software Description: - tomcat9: Servlet and JSP engine - tomcat8: Servlet and JSP engine Details: It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore configurations. A remote attacker could possibly use this issue to execute arbitrary code. This issue only affected tomcat8 for Ubuntu 18.04 LTS (CVE-2020-9484) It was discovered that Tomcat incorrectly handled certain HTTP/2 connection requests. A remote attacker could use this issue to obtain wrong responses possibly containing sensitive information. This issue only affected tomcat8 for Ubuntu 18.04 LTS (CVE-2021-25122) Thomas Wozenilek discovered that Tomcat incorrectly handled certain TLS packets. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected tomcat8 for Ubuntu 18.04 LTS (CVE-2021-41079) Trung Pham discovered that a race condition existed in Tomcat when handling session files with FileStore. A remote attacker could possibly use this issue to execute arbitrary code. This issue affected tomcat8 for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS, and tomcat9 for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS (CVE-2022-23181) It was discovered that Tomcat's documentation incorrectly stated that EncryptInterceptor provided availability protection when running over an untrusted network. A remote attacker could possibly use this issue to cause a denial of service even if EncryptInterceptor was being used. This issue affected tomcat8 for Ubuntu 18.04 LTS, and tomcat9 for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS (CVE-2022-29885)
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS tomcat9-docs 9.0.58-1ubuntu0.1+esm2 Available with Ubuntu Pro Ubuntu 20.04 LTS libtomcat9-java 9.0.31-1ubuntu0.6 tomcat9 9.0.31-1ubuntu0.6 tomcat9-docs 9.0.31-1ubuntu0.6 Ubuntu 18.04 LTS libtomcat8-java 8.5.39-1ubuntu1~18.04.3+esm2 Available with Ubuntu Pro libtomcat9-java 9.0.16-3ubuntu0.18.04.2+esm2 Available with Ubuntu Pro tomcat8 8.5.39-1ubuntu1~18.04.3+esm2 Available with Ubuntu Pro tomcat8-docs 8.5.39-1ubuntu1~18.04.3+esm2 Available with Ubuntu Pro tomcat9 9.0.16-3ubuntu0.18.04.2+esm2 Available with Ubuntu Pro tomcat9-docs 9.0.16-3ubuntu0.18.04.2+esm2 Available with Ubuntu Pro Ubuntu 16.04 LTS libtomcat8-java 8.0.32-1ubuntu1.13+esm1 Available with Ubuntu Pro tomcat8 8.0.32-1ubuntu1.13+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-6943-1
CVE-2020-9484, CVE-2021-25122, CVE-2021-41079, CVE-2022-23181,
CVE-2022-29885
Package Information
https://launchpad.net/ubuntu/+source/tomcat9/9.0.31-1ubuntu0.6
