USN-4314-1: pam-krb5 vulnerability

USN-4314-1: pam-krb5 vulnerability

libpam-krb5 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 19.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS
• Ubuntu 14.04 ESM
• Ubuntu 12.04 ESM

Summary

pam-krb5 could be made to execute arbitrary code if it received a specially
crafted response.

Software Description

• libpam-krb5 – PAM module for MIT Kerberos

Details

Russ Allbery discovered that pam-krb5 incorrectly handled some responses.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions

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

Ubuntu 19.10

libpam-krb5 – 4.8-2ubuntu0.1

Ubuntu 18.04 LTS

libpam-krb5 – 4.8-1ubuntu0.1

Ubuntu 16.04 LTS

libpam-krb5 – 4.7-2ubuntu0.1

Ubuntu 14.04 ESM

libpam-krb5 – 4.6-2ubuntu0.1~esm1

Ubuntu 12.04 ESM

libpam-krb5 – 4.5-3ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2020-10595

Source: USN-4314-1: pam-krb5 vulnerability