SB2022081301 - Privilege escalation in TrouSerS
Published: August 13, 2022
Security Bulletin ID
SB2022081301
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Privilege Management (CVE-ID: CVE-2020-24330)
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to the tcsd daemon is started with root privileges instead of tss user and fails to drop them after successful start. A local user can abuse such behavior and escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://bugzilla.suse.com/show_bug.cgi?id=1164472
- https://sourceforge.net/p/trousers/mailman/message/37015817/
- https://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patch
- http://www.openwall.com/lists/oss-security/2020/08/14/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/