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CVE-2018-1063

18
FAUCET Score

CVE-2018-1063 is a symbolic link attack vulnerability in policycoreutils 2.5-11, affecting Red Hat Enterprise Linux and SELinux. It allows a local, unprivileged attacker to change the SELinux context of an arbitrary file to a less restricted one during filesystem relabeling, typically when transitioning SELinux from disabled to enabled. With a CVSS score of 4.4 (Medium), the attack requires local access and has low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:selinux_project:selinux:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th percentile among its peer group of 15,903 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: policycoreutils-0:2.5-22.el7
View patch
redhatworkaround availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: policycoreutils

Vendor Advisories (1)

redhatCVE-2018-1063Low

policycoreutils: Relabelling of symbolic links in /tmp and /var/tmp change the context of their target instead

Feb 28, 2018

References

access.redhat.com / errata/RHSA-2018:0913
bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationVendor Advisory