Access Restriction Bypass Affecting libx11 package, versions <2:1.6.4-1
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
1.3% (86th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN9-LIBX11-339129
- published 13 Dec 2016
- disclosed 13 Dec 2016
How to fix?
Upgrade Debian:9
libx11
to version 2:1.6.4-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libx11
package and not the libx11
package as distributed by Debian
.
See How to fix?
for Debian:9
relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2016-7942
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8ea762f94f4c942d898fdeb590a1630c83235c17
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7942
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/
- https://security.gentoo.org/glsa/201704-03
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html
- http://www.openwall.com/lists/oss-security/2016/10/04/2
- http://www.openwall.com/lists/oss-security/2016/10/04/4
- http://www.securityfocus.com/bid/93363
- http://www.securitytracker.com/id/1036945
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-7942
- https://usn.ubuntu.com/3758-1/
- https://usn.ubuntu.com/3758-2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/