[USN-6156-2] SSSD regression

Marc Deslauriers marc.deslauriers at canonical.com
Fri Jun 16 13:08:55 UTC 2023

Ubuntu Security Notice USN-6156-2
June 16, 2023

sssd regression

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

- Ubuntu 20.04 LTS


USN-6156-1 introduced a regression in SSSD.

Software Description:
- sssd: System Security Services Daemon


USN-6156-1 fixed a vulnerability in SSSD. In certain environments, not all
packages ended up being upgraded at the same time, resulting in
authentication failures when the PAM module was being used.

This update fixes the problem. We apologize for the inconvenience.

Original advisory details:

  It was discovered that SSSD incorrrectly sanitized certificate data used in
  LDAP filters. When using this issue in combination with FreeIPA, a remote
  attacker could possibly use this issue to escalate privileges.

Update instructions:

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

Ubuntu 20.04 LTS:
   sssd                            2.2.3-3ubuntu0.12

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


Package Information:

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