Improper Privilege Management in systemd - CVE-2023-26604
Published: March 28, 2023
Vulnerability identifier: #VU74146
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-26604
CWE-ID: CWE-269
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Freedesktop.org
Affected software:
systemd
systemd
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper privilege management for some Sudo configurations, e.g., plausible sudoers files in which the "systemctl status" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output.
How to mitigate CVE-2023-26604
Install updates from vendor's website.