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TI-2011-03556 Aliases CVE-2011-4028GHSA-43jf-fxqp-3qf7

The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users…

Priority LOW 8CWE-59Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Partial · None · None
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-59 and the CVSS impact.

Summary

The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to determine the existence of arbitrary files via a symlink attack on a temporary lock file, which is handled differently if the file exists.

Why it matters now

EPSS 0.00372 31st percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix

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 · 2

CPEVersionsRoleVendor
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*up to 1.11.1Vulnerablex.org
cpe:2.3:a:x.org:x_server:1.11.0:*:*:*:*:*:*:*1.11.0Vulnerablex.org
  • cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* Versions up to 1.11.1 Vulnerable ·x.org
  • cpe:2.3:a:x.org:x_server:1.11.0:*:*:*:*:*:*:* Versions 1.11.0 Vulnerable ·x.org

Remediation

Red Hat 2 advisories

  • RHSA-2012:0939 Released 2012-06-19 · Red Hat rating Low
    xorg-x11-server security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xephyr-1.10.6-1.el6, xorg-x11-server-Xorg-1.10.6-1.el6 +1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xdmx-1.10.6-1.el6, xorg-x11-server-Xnest-1.10.6-1.el6 +3
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xdmx-1.10.6-1.el6, xorg-x11-server-Xephyr-1.10.6-1.el6 +6
    • Red Hat Enterprise Linux Server (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xephyr-1.10.6-1.el6, xorg-x11-server-Xorg-1.10.6-1.el6 +1
    • Red Hat Enterprise Linux Server Optional (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xdmx-1.10.6-1.el6, xorg-x11-server-Xnest-1.10.6-1.el6 +4
    • Red Hat Enterprise Linux Workstation (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xephyr-1.10.6-1.el6, xorg-x11-server-Xorg-1.10.6-1.el6 +1
    • Red Hat Enterprise Linux Workstation Optional (v. 6) xorg-x11-server-1.10.6-1.el6, xorg-x11-server-Xdmx-1.10.6-1.el6, xorg-x11-server-Xnest-1.10.6-1.el6 +3
  • RHSA-2012:0303 Released 2012-02-21 · Red Hat rating Low
    xorg-x11-server security and bug fix update
    • Red Hat Enterprise Linux (v. 5 server) xorg-x11-server-1.1.1-48.90.el5, xorg-x11-server-Xdmx-1.1.1-48.90.el5, xorg-x11-server-Xdmx-1.1.1-48.90.el5.i386 +26
    • Red Hat Enterprise Linux Desktop (v. 5 client) xorg-x11-server-1.1.1-48.90.el5, xorg-x11-server-Xdmx-1.1.1-48.90.el5, xorg-x11-server-Xdmx-1.1.1-48.90.el5.i386 +10
    • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) xorg-x11-server-1.1.1-48.90.el5, xorg-x11-server-sdk-1.1.1-48.90.el5, xorg-x11-server-sdk-1.1.1-48.90.el5.i386

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 4AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux (v. 5 server)Fixed RHSA-2012:0303
Red Hat Enterprise Linux Desktop (v. 5 client)Fixed RHSA-2012:0303
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Desktop Workstation (v. 5 client)Fixed RHSA-2012:0303
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2012:0939
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2012:0939

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4028
  2. 2026-10-03 Alias added: GHSA-43jf-fxqp-3qf7

References

Advisory 1

Other 2

  • TI-2018-10528 A flaw was found in xorg-x11-server before 1.20.3. CVSS 3.0MEDIUM 6.6
  • TI-2017-08976 Improper input validation in x.org xorg-x11-server CVSS 3.0CRITICAL 9.8
  • TI-2017-08975 xorg-x11-server before 1.19.5 was missing length validation in MIT-SCREEN-SAVER extension… CVSS 3.0CRITICAL 9.8
  • TI-2017-08974 Improper input validation in x.org xorg-x11-server CVSS 3.0CRITICAL 9.8
  • TI-2017-08973 Improper input validation in x.org xorg-x11-server CVSS 3.0CRITICAL 9.8
  • TI-2017-08972 Improper input validation in x.org xorg-x11-server CVSS 3.0CRITICAL 9.8
See all 96 →

Sources

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