CVE-2016-7942

Description

The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.14% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1036945 vdb entry
https://usn.ubuntu.com/3758-2/ vendor advisory
https://security.gentoo.org/glsa/201704-03 vendor advisory
http://www.securityfocus.com/bid/93363 vdb entry
https://lists.x.org/archives/xorg-announce/2016-October/002720.html mailing list
http://www.openwall.com/lists/oss-security/2016/10/04/4 mailing list
http://www.openwall.com/lists/oss-security/2016/10/04/2 mailing list
https://usn.ubuntu.com/3758-1/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/ vendor advisory
https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8ea762f94f4c942d898fdeb590a1630c83235c17

Frequently Asked Questions

What is the severity of CVE-2016-7942?
CVE-2016-7942 has been scored as a critical severity vulnerability.
How to fix CVE-2016-7942?
To fix CVE-2016-7942, 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-2016-7942 being actively exploited in the wild?
It is possible that CVE-2016-7942 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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