Stay Secure with the Latest Linux Advisories

security advisoryremote attackauthentication issue

Ubuntu 20.04 LTS USN-6156-2: SSSD Authentication Issue Resolved

USN-6156-1 introduced a regression in SSSD.. =========================================================================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 Summary: USN-6156-1 introduced a regression in SSSD. Software Description: - sssd: System Security Services Daemon Details: 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. References: https://ubuntu.com/security/notices/USN-6156-2 https://ubuntu.com/security/notices/USN-6156-1 https://bugs.launchpad.net/ubuntu/+source/sssd/+bug/2023598 Package Information: https://launchpad.net/ubuntu/+source/sssd/2.2.3-3ubuntu0.12 . Ubuntu 20.04 LTS encounters SSSD regression, rectified via security advisory USN-6156-2, enhancing user authentication protocols.. Ubuntu 20.04 LTS, SSSD Authentication, Security Update, Regression Fix, System Security. . Severity: Important. LinuxSecurity.com Team

Jun 16, 2023 •Important Ubuntu