CVE-2017-13721

Name: CVE-2017-13721
Creator: NVD / NIST
Published: 2017-10-10T01:30:21.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.36%

Last modified Jun 17, 2026

CVE-2017-13721 is a vulnerability of currently unknown severity. In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.

Metrics

EPSS Probability

0.36%

27.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-269

Affected Software

Vendor	Product	Versions
X.Org	X Server	<= 1.19.3
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.debian.org/security/2017/dsa-4000Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/101238Third Party Advisory, VDB Entry
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1Third Party Advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
https://security.gentoo.org/glsa/201710-30Third Party Advisory
http://www.debian.org/security/2017/dsa-4000Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/101238Third Party Advisory, VDB Entry
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1Third Party Advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
https://security.gentoo.org/glsa/201710-30Third Party Advisory

Timeline

Published: Oct 10, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-13721?

How severe is CVE-2017-13721?

Severity scoring for CVE-2017-13721 is pending analysis. The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2017-13721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-13721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST