Buffer overflow in X.org Libx11
CVE-2016-7942
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.045 (91.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.045 · change: +0.002
Affected products
- X.org Libx11
- Fedoraproject Fedora — versions 25
Weakness classification (CWE)
References
- www.securitytracker.com/id/1036945 (vdb-entry)
- usn.ubuntu.com/3758-2/ (vendor-advisory)
- security.gentoo.org/glsa/201704-03 (vendor-advisory)
- www.securityfocus.com/bid/93363 (vdb-entry)
- lists.x.org/archives/xorg-announce/2016-October/002720.html (mailing-list)
- www.openwall.com/lists/oss-security/2016/10/04/4 (mailing-list)
- www.openwall.com/lists/oss-security/2016/10/04/2 (mailing-list)
- usn.ubuntu.com/3758-1/ (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- cgit.freedesktop.org/xorg/lib/libX11/commit/
Frequently asked questions
- What is CVE-2016-7942?
- CVE-2016-7942 is a critical-severity vulnerability in X.org Libx11, classified under CWE-264. CVSS score: 9.8/10. Published 2016-12-13.
- How severe is CVE-2016-7942?
- Critical severity. CVSS v3 base score is 9.8 out of 10.