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Ubuntu 22.04 LTS USN-7616-1 important: logback denial of service

ubuntu
Calendar Grey July 3, 2025
Dist Ubuntu Esm H88
Security alert USN-7617-1 outlines resolutions for log4j's severe vulnerabilities affecting multiple Ubuntu releases.
Several security issues were fixed in logback.

Summary

Several security issues were fixed in logback.

Software Description:

- logback: A reliable, generic, fast and flexible logging library for Java

Details:

It was discovered that logback could read malicious configuration files

from LDAP servers. An attacker with the required permissions could possibly

use this issue to execute arbitrary code. This issue only affected Ubuntu

16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-42550) It was

discovered that logback contained a serialization vulnerability. An

attacker could possibly use this issue to cause a denial of service.

(CVE-2023-6378)

Topics%20covered

Topics Covered

security advisory denial of service important ubuntu LDAP logback

Update Instructions

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

Ubuntu 22.04 LTS
  liblogback-java                 1:1.2.10-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  liblogback-java                 1:1.2.3-5ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  liblogback-java                 1:1.2.3-2ubuntu1~18.04.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  liblogback-java                 1:1.1.3-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7616-1

CVE-2021-42550, CVE-2023-6378

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7616-1

Topics%20covered

Topics Covered

security advisory denial of service important ubuntu LDAP logback

Package Information

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