[USN-6156-2] SSSD regression
marc.deslauriers at canonical.com
Fri Jun 16 13:08:55 UTC 2023
Ubuntu Security Notice USN-6156-2
June 16, 2023
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
USN-6156-1 introduced a regression in SSSD.
- 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.
The problem can be corrected by updating your system to the following
Ubuntu 20.04 LTS:
In general, a standard system update will make all the necessary changes.
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