CVE-2013-4327

Name: CVE-2013-4327
Creator: NVD / NIST
Published: 2013-10-03T21:55:04.443+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.30%

Last modified Jun 16, 2026

CVE-2013-4327 is a vulnerability of currently unknown severity. systemd does not properly use D-Bus for communication with a polkit authority, which allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

systemd does not properly use D-Bus for communication with a polkit authority, which allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.

Metrics

EPSS Probability

0.30%

21.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Systemd Project	Systemd	<= 207
Debian	Debian Linux	7.0
Canonical	Ubuntu Linux	13.04

References

http://www.debian.org/security/2013/dsa-2777Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/09/18/6Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-1961-1Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1006680Issue Tracking, Patch, Third Party Advisory
http://www.debian.org/security/2013/dsa-2777Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/09/18/6Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-1961-1Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1006680Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Oct 3, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-4327?

How severe is CVE-2013-4327?

Severity scoring for CVE-2013-4327 is pending analysis. The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2013-4327?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-4327?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST