CVE-2017-13721

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.

Category

4.7
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory gentoo.org Vendor Advisory debian.org Vendor Advisory x.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1 third party advisory
https://security.gentoo.org/glsa/201710-30 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2017/10/04/10 third party advisory mailing list
http://www.securityfocus.com/bid/101238 vdb entry third party advisory
http://www.debian.org/security/2017/dsa-4000 third party advisory vendor advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.html mailing list vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-13721?
CVE-2017-13721 has been scored as a medium severity vulnerability.
How to fix CVE-2017-13721?
To fix CVE-2017-13721, 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-2017-13721 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-13721 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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