CVE-2016-7949: Input Validation
First published: Tue Dec 13 2016(Updated: )
Multiple buffer overflows in the (1) XvQueryAdaptors and (2) XvQueryEncodings functions in X.org libXrender before 0.9.10 allow remote X servers to trigger out-of-bounds write operations via vectors involving length fields.
Credit: meissner@suse.de
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SUSE LibXrender1 | <=0.9.9 | |
| Fedora | =24 | |
| Fedora | =25 |
Remedy
https://cgit.freedesktop.org/xorg/lib/libXrender/commit/?id=9362c7ddd1af3b168953d0737877bc52d79c94f4
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Reference Links
- 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/93366
- http://www.securitytracker.com/id/1036945
- https://cgit.freedesktop.org/xorg/lib/libXrender/commit/?id=9362c7ddd1af3b168953d0737877bc52d79c94f4
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7WCKZFMZ76APAVMIRCUKKHEB4GAS7ZUP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZHUT5YOSWVMBJNWZGUQNZRBFIZKRM4A6/
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html
- https://security.gentoo.org/glsa/201704-03
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHUT5YOSWVMBJNWZGUQNZRBFIZKRM4A6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WCKZFMZ76APAVMIRCUKKHEB4GAS7ZUP/
Frequently Asked Questions
What is the severity of CVE-2016-7949?
CVE-2016-7949 is considered to have high severity due to its potential for remote exploitation leading to arbitrary code execution.
How do I fix CVE-2016-7949?
To fix CVE-2016-7949, upgrade libXrender to version 0.9.10 or later on affected systems.
Which software is affected by CVE-2016-7949?
CVE-2016-7949 affects versions of libXrender prior to 0.9.10 on systems such as Debian and Fedora versions 24 and 25.
Who can exploit CVE-2016-7949?
CVE-2016-7949 can potentially be exploited by remote attackers with access to the X server.
What types of attacks can CVE-2016-7949 facilitate?
CVE-2016-7949 can facilitate attacks that result in out-of-bounds writes, leading to crashes or code execution.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/remedy
- agent/author
- agent/last-modified-date
- agent/weakness
- agent/references
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/x.org
- canonical/suse libxrender1
- version/suse libxrender1/0.9.9
- vendor/fedoraproject
- canonical/fedora
- version/fedora/24
- version/fedora/25