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TI-2018-10528 Aliases CVE-2018-14665GHSA-c34f-6cmx-fcvv

A flaw was found in xorg-x11-server before 1.20.3.

Priority MEDIUM 51CWE-863Published · Updated

Key facts

Attack vector
Physical
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-863.

Summary

A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.

Why it matters now

EPSS 0.27241 98th percentileScored 2026-11-07
Public exploit Yes 8 exploit referencesTagged by the CNA and NVD
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*before 1.20.3Vulnerablex.org
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
  • cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* Versions before 1.20.3 Vulnerable ·x.org
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 1 advisory

  • RHSA-2018:3410 Released 2018-10-30 · Red Hat rating Important
    xorg-x11-server security update
    • Red Hat Enterprise Linux Client (v. 7) xorg-x11-server-1.20.1-5.1.el7, xorg-x11-server-Xephyr-1.20.1-5.1.el7, xorg-x11-server-Xorg-1.20.1-5.1.el7 +1
    • Red Hat Enterprise Linux Client Optional (v. 7) xorg-x11-server-Xdmx-1.20.1-5.1.el7, xorg-x11-server-Xnest-1.20.1-5.1.el7, xorg-x11-server-Xvfb-1.20.1-5.1.el7 +3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) xorg-x11-server-1.20.1-5.1.el7, xorg-x11-server-Xdmx-1.20.1-5.1.el7, xorg-x11-server-Xephyr-1.20.1-5.1.el7 +7
    • Red Hat Enterprise Linux Server (v. 7) xorg-x11-server-1.20.1-5.1.el7, xorg-x11-server-Xephyr-1.20.1-5.1.el7, xorg-x11-server-Xorg-1.20.1-5.1.el7 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) xorg-x11-server-Xdmx-1.20.1-5.1.el7, xorg-x11-server-Xnest-1.20.1-5.1.el7, xorg-x11-server-Xvfb-1.20.1-5.1.el7 +4
    • Red Hat Enterprise Linux Workstation (v. 7) xorg-x11-server-1.20.1-5.1.el7, xorg-x11-server-Xephyr-1.20.1-5.1.el7, xorg-x11-server-Xorg-1.20.1-5.1.el7 +1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) xorg-x11-server-Xdmx-1.20.1-5.1.el7, xorg-x11-server-Xnest-1.20.1-5.1.el7, xorg-x11-server-Xvfb-1.20.1-5.1.el7 +3
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) xorg-x11-server-1.20.1-5.1.el7, xorg-x11-server-Xephyr-1.20.1-5.1.el7, xorg-x11-server-Xorg-1.20.1-5.1.el7 +1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) xorg-x11-server-Xdmx-1.20.1-5.1.el7, xorg-x11-server-Xnest-1.20.1-5.1.el7, xorg-x11-server-Xvfb-1.20.1-5.1.el7 +3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:3410
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:3410
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-14665
  2. 2026-10-03 Alias added: GHSA-c34f-6cmx-fcvv

References

Exploit 8

Patch 4

Advisory 4

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences