Improper Input Validation

Affecting systemd package, versions *

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Overview

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.

References

CVSS Score

4.7
low severity
  • Attack Vector
    Local
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2018-16888
CWE
CWE-20 CWE-250 CWE-732
Snyk ID
SNYK-DEBIAN9-SYSTEMD-305135
Disclosed
14 Jan, 2019
Published
03 Jan, 2019