CVE-2023-26604
systemd: privilege escalation via the less pager
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 3, 2023
Updated · June 30, 2026
Description
A vulnerability was found in the systemd package. The systemd package does not adequately block local privilege escalation for some sudo configurations, for example, 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 issue 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.
Statement
As the vulnerability requires a non-default configuration (modified sudoer rules) which is beyond control of an attacker, the impact as been rated Moderate.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE not specified