Ubuntu 25.10 OpenJDK 11 Critical Info Leak & XEE Attack USN-7882-1

ubuntu

November 25, 2025

Several security issues were fixed in OpenJDK 11.

Summary

Several security issues were fixed in OpenJDK 11.

Software Description:

- openjdk-lts: Open Source Java implementation

Details:

Jinfeng Guo discovered that the Security component of OpenJDK 11 did not

correctly handle certain representations of encoded strings. An

unauthenticated remote attacker could possibly use this issue to modify

files or leak sensitive information. (CVE-2025-53057)

Darius Bohni discovered that the JAXP component of OpenJDK 11 was

vulnerable to a XML External Entity (XEE) attack. An unauthenticated

remote attacker could possibly use this issue to modify files or leak

sensitive information. (CVE-2025-53066)

In addition to security fixes, the updated packages contain bug fixes, new

features, and possibly incompatible changes.

Please see the following for more information:

https://openjdk.org/groups/vulnerability/advisories/2025-10-21

Topics Covered

security advisory information leak remote access Ubuntu openjdk XML attack

Update Instructions

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

Ubuntu 25.10
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~25.10
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~25.10
  openjdk-11-jre                  11.0.29+7-1ubuntu1~25.10
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~25.10
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~25.10

Ubuntu 25.04
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~25.04
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~25.04
  openjdk-11-jre                  11.0.29+7-1ubuntu1~25.04
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~25.04
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~25.04

Ubuntu 24.04 LTS
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~24.04
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~24.04
  openjdk-11-jre                  11.0.29+7-1ubuntu1~24.04
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~24.04
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~24.04

Ubuntu 22.04 LTS
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~22.04
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~22.04
  openjdk-11-jre                  11.0.29+7-1ubuntu1~22.04
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~22.04
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~22.04

Ubuntu 20.04 LTS
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre                  11.0.29+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~20.04
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  openjdk-11-jdk                  11.0.29+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jdk-headless         11.0.29+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre                  11.0.29+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-headless         11.0.29+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro
  openjdk-11-jre-zero             11.0.29+7-1ubuntu1~18.04
                                  Available with Ubuntu Pro

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart Java
applications to make all the necessary changes.