It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes. Versions before v237 are vulnerable.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 4.4 | Medium | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H |
| Product | Vendor | Version |
|---|---|---|
| systemd | The systemd Project | n/a |