USN-4314-1: pam-krb5 vulnerability

Releases

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

Packages

• 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

• libpam-krb5 - 4.8-1ubuntu0.1

Ubuntu 16.04

• libpam-krb5 - 4.7-2ubuntu0.1

Ubuntu 14.04

• libpam-krb5 - 4.6-2ubuntu0.1~esm1
  Available with Ubuntu Pro

Ubuntu 12.04

• libpam-krb5 - 4.5-3ubuntu0.1

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

References

• CVE-2020-10595