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Fencer Vulns
high 8.8

CVE-2017-10971 json

In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by…

published 2017-07-06 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-2609

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events.

Patch / fix

  • xorg-server Debian 14, Debian 13, Debian 12 2:1.19.3-2

debian advisories DEBIAN-CVE-2017-10971

  • xorg-server Ubuntu 14.04 LTS 2:1.15.1-0ubuntu2.9
  • xorg-server Ubuntu 16.04 LTS 2:1.18.4-0ubuntu0.3
  • xorg-server-hwe-16.04 Ubuntu 16.04 LTS 2:1.18.4-1ubuntu6.1~16.04.2
  • xorg-server-lts-xenial Ubuntu 14.04 LTS 2:1.18.3-1ubuntu2.3~trusty2

ubuntu advisories UBUNTU-CVE-2017-10971

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 SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 7.6_1.15.2-53.3.1
  • xorg-x11-server SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +2 more 7.6_1.18.3-74.2
  • xorg-x11-server SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 7.4-27.121.2
  • xorg-x11-server SLES for SAP 12, SLES 12-LTSS 7.6_1.15.2-30.22.1

suse advisories SUSE-SU-2017:1861-1SUSE-SU-2017:1859-1SUSE-SU-2017:1860-1SUSE-SU-2017:1850-1

  • xorg-x11-server openSUSE Tumbleweed 1.20.13-1.2

opensuse advisories openSUSE-SU-2024:11525-1

  • xorg-server Arch Linux 1.19.3-3

arch linux advisories AVG-341

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-2017-10971 updated cvss 4.7

xorg-x11-server: Stack overflow in the endianness conversion of X Events

  • Red Hat Enterprise Linux 5 xorg-x11-server Red Hat Enterprise Linux 6 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +2 more Red Hat Enterprise Linux 7 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +3 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 9 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +2 more
    not affected: vulnerable code not present

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

3.88% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns 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.