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Fencer Intel
medium 4.3

CVE-2014-8091 json

X.Org X Window System (aka X11 and X) X11R5 and X.Org Server (aka xserver and xorg-server) before 1.16.3, when using SUN-DES-1 (Secure RPC)…

published 2014-12-10 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-7938

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.2%
EPSS 4.2% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

X.Org X Window System (aka X11 and X) X11R5 and X.Org Server (aka xserver and xorg-server) before 1.16.3, when using SUN-DES-1 (Secure RPC) authentication credentials, does not check the return value of a malloc call, which allows remote attackers to cause a denial of service (NULL pointer dereference and server crash) via a crafted connection request.

Patch / fix

  • xorg-server Debian 14, Debian 13, Debian 12 2:1.16.2.901-1

debian advisories DEBIAN-CVE-2014-8091

  • xorg-server Ubuntu 14.04 LTS 2:1.15.1-0ubuntu2.4
  • nvidia-graphics-drivers-304 Ubuntu 14.04 LTS 304.125-0ubuntu0.0.1
  • nvidia-graphics-drivers-331 Ubuntu 14.04 LTS 331.113-0ubuntu0.0.4
  • nvidia-graphics-drivers-304-updates Ubuntu 14.04 LTS 304.125-0ubuntu0.0.1
  • nvidia-graphics-drivers-331-updates Ubuntu 14.04 LTS 331.113-0ubuntu0.0.4

ubuntu advisories UBUNTU-CVE-2014-8091

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xorg-x11-server RHEL 6 1.15.0-25.el6_6
  • xorg-x11-server RHEL 7 1.15.0-7.el7_0.3
  • xorg-x11-server-Xdmx RHEL 6 1.15.0-25.el6_6
  • xorg-x11-server-Xdmx RHEL 7 1.15.0-7.el7_0.3
  • xorg-x11-server-Xorg RHEL 6 1.15.0-25.el6_6
  • xorg-x11-server-Xorg RHEL 7 1.15.0-7.el7_0.3
  • xorg-x11-server-Xvfb RHEL 6 1.15.0-25.el6_6
  • xorg-x11-server-Xvfb RHEL 7 1.15.0-7.el7_0.3

red hat advisories RHSA-2014:1983RHSA-2014:1982

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-8091 updated cvss 2.3

xorg-x11-server: denial of service due to unchecked malloc in client authentication

  • Red Hat Enterprise Linux (v. 5 server) xorg-x11-server 1.1.1-48.107.el5_11, xorg-x11-server-sdk 1.1.1-48.107.el5_11, xorg-x11-server-Xdmx 1.1.1-48.107.el5_11, xorg-x11-server-Xorg 1.1.1-48.107.el5_11, xorg-x11-server-Xvfb 1.1.1-48.107.el5_11, xorg-x11-server-Xnest 1.1.1-48.107.el5_11, +2 more
    fixed: vendor fix RHSA-2014:1982
  • Red Hat Enterprise Linux Client (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more Red Hat Enterprise Linux Client Optional (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more
    fixed: vendor fix RHSA-2014:1983
  • Red Hat Enterprise Linux Desktop (v. 5 client) xorg-x11-server 1.1.1-48.107.el5_11, xorg-x11-server-sdk 1.1.1-48.107.el5_11, xorg-x11-server-Xdmx 1.1.1-48.107.el5_11, xorg-x11-server-Xorg 1.1.1-48.107.el5_11, xorg-x11-server-Xvfb 1.1.1-48.107.el5_11, xorg-x11-server-Xnest 1.1.1-48.107.el5_11, +2 more
    fixed: vendor fix RHSA-2014:1982
  • Red Hat Enterprise Linux Desktop (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more Red Hat Enterprise Linux Desktop Optional (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more
    fixed: vendor fix RHSA-2014:1983
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) xorg-x11-server 1.1.1-48.107.el5_11, xorg-x11-server-sdk 1.1.1-48.107.el5_11, xorg-x11-server-Xdmx 1.1.1-48.107.el5_11, xorg-x11-server-Xorg 1.1.1-48.107.el5_11, xorg-x11-server-Xvfb 1.1.1-48.107.el5_11, xorg-x11-server-Xnest 1.1.1-48.107.el5_11, +2 more
    fixed: vendor fix RHSA-2014:1982
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more Red Hat Enterprise Linux Server (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more Red Hat Enterprise Linux Server (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more Red Hat Enterprise Linux Server Optional (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more Red Hat Enterprise Linux Server Optional (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more Red Hat Enterprise Linux Workstation (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more
    +3 more products
    Red Hat Enterprise Linux Workstation (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more Red Hat Enterprise Linux Workstation Optional (v. 6) xorg-x11-server 1.15.0-25.el6_6, xorg-x11-server-Xdmx 1.15.0-25.el6_6, xorg-x11-server-Xorg 1.15.0-25.el6_6, xorg-x11-server-Xvfb 1.15.0-25.el6_6, xorg-x11-server-Xnest 1.15.0-25.el6_6, xorg-x11-server-common 1.15.0-25.el6_6, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) xorg-x11-server 1.15.0-7.el7_0.3, xorg-x11-server-Xdmx 1.15.0-7.el7_0.3, xorg-x11-server-Xorg 1.15.0-7.el7_0.3, xorg-x11-server-Xvfb 1.15.0-7.el7_0.3, xorg-x11-server-Xnest 1.15.0-7.el7_0.3, xorg-x11-server-common 1.15.0-7.el7_0.3, +2 more
    fixed: vendor fix RHSA-2014:1983

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.19% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.