Sssd: race condition during authorization leads to gpo policies functioning inconsistently
A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.
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.
A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.