Vulnerability in Systemd Project
CVE-2013-4327
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.003 (20.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Systemd Project
- Canonical Ubuntu Linux — versions 13.04
- Debian Linux — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-1961-1 (vendor-advisory, Vendor Advisory)
- www.openwall.com/lists/oss-security/2013/09/18/6 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2013/dsa-2777 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2013-4327?
- CVE-2013-4327 is a vulnerability in Systemd Project, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). Published 2013-10-03.
- Is CVE-2013-4327 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.