CVE-2017-12178

Description

xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

Categories

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.00% Top 25%
Vendor Advisory debian.org Vendor Advisory gentoo.org
Affected: The X.Org Foundation xorg-x11-server
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2017/dsa-4000 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1509219 issue tracking patch vdb entry third party advisory
https://security.gentoo.org/glsa/201711-05 vdb entry third party advisory vendor advisory
https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2017-12178?
CVE-2017-12178 has been scored as a critical severity vulnerability.
How to fix CVE-2017-12178?
To fix CVE-2017-12178, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12178 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12178 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-12178?
CVE-2017-12178 affects The X.Org Foundation xorg-x11-server.
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