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CVE-2013-4311

19
FAUCET Score

CVE-2013-4311 describes a local privilege escalation vulnerability in libvirt versions 1.0.5.x, 0.10.2.x, and 0.9.12.x affecting various Linux distributions like Canonical Ubuntu and Red Hat Enterprise Linux. This flaw allows local users to bypass access restrictions due to a race condition in PolkitUnixProcess PolkitSubject via setuid or pkexec processes, similar to CVE-2013-4288. The vulnerability has a CVSS score of 4.6, indicating low attack complexity and requiring local access, with potential impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.12CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:0.9.12:*:*:*:*:*:*:*
0.10.2CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:0.10.2:*:*:*:*:*:*:*
0.10.2.1CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:0.10.2.1:*:*:*:*:*:*:*
0.10.2.2CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:0.10.2.2:*:*:*:*:*:*:*
0.10.2.3CPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:0.10.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 61st percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libvirt-0:0.10.2-18.el6_4.14
View patch
ubuntuvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Storage 2.0Fixed in: libvirt
redhatno patchvia redhat_api
Product: Red Hat Storage 2.1Fixed in: libvirt

Vendor Advisories (1)

redhatCVE-2013-4311Important

libvirt: insecure calling of polkit

Sep 18, 2013

References

lists.opensuse.org / opensuse-updates/2013-10/msg00023.html
lists.opensuse.org / opensuse-updates/2013-10/msg00024.html
rhn.redhat.com / errata/RHSA-2013-1272.html
Vendor Advisory
rhn.redhat.com / errata/RHSA-2013-1460.html
wiki.libvirt.org / page/Maintenance_Releases
Patch
openwall.com / lists/oss-security/2013/09/18/6
ubuntu.com / usn/USN-1954-1
Vendor Advisory