Information disclosure in System Security Services Daemon (SSSD) - CVE-2018-10852

Vulnerability identifier: #VU14328

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-10852

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to too wide permissions in the UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD. A remote attacker can send a message using the same raw protocol that sudo and SSSD use can read the sudo rules available for any user.

System Security Services Daemon (SSSD)
Amazon Linux AMI
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Opensuse
Ubuntu
sssd (Ubuntu package)

Update to version 1.16.3.

System Security Services Daemon (SSSD) - update to 1.16.3
sssd (Ubuntu package) - addressed in versions 1.16.1-1ubuntu1.8, 2.2.3-3ubuntu0.7, 2.4.0-1ubuntu6.1

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10852

• Information disclosure in Pagure SSSD
• OpenSUSE Linux update for sssd
• OpenSUSE Linux update for sssd
• Amazon Linux AMI update for sssd
• Red Hat update for sssd
• Ubuntu update for sssd