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Ubuntu 18.04 LTS: USN-6588-2 Moderate: pam Denial Of Service Threat

ubuntu
Calendar Grey March 26, 2024
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-6588-2 outlines a vulnerability within PAM that may lead to a possible denial of service across several Ubuntu distributions.
PAM could be made to stop responding if it opened a specially crafted file.

Summary

PAM could be made to stop responding if it opened a specially crafted file.

Software Description:

- pam: Pluggable Authentication Modules

Details:

USN-6588-1 fixed a vulnerability in PAM. This update

provides the corresponding updates for Ubuntu 14.04 LTS,

Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.

Original advisory details:

 Matthias Gerstner discovered that the PAM pam_namespace module incorrectly

 handled special files when performing directory checks. A local attacker

 could possibly use this issue to cause PAM to stop responding,

resulting in

 a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service software issue ubuntu pam

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   libpam-modules                  1.1.8-3.6ubuntu2.18.04.6+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   libpam-modules                  1.1.8-3.2ubuntu2.3+esm5

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   libpam-modules                  1.1.8-1ubuntu2.2+esm4

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

References

  https://ubuntu.com/security/notices/USN-6588-2

  https://ubuntu.com/security/notices/USN-6588-1

  CVE-2024-22365

Ubuntu Security Notice USN-6588-2

Topics%20covered

Topics Covered

security advisory denial of service software issue ubuntu pam

Package Information

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