CVE-2016-7943 Memory corruption in n/a
Remote X servers can gain privileges via out-of-bounds writes in libX11, requiring an upgrade to secure the client library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7943?
CVE-2016-7943 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 13 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.
Weakness: CWE-787
Which versions are affected by CVE-2016-7943?
It affects 2 products.
Products include Fedoraproject Fedora, X.org Libx11.
How do I fix CVE-2016-7943?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2016-7943 being exploited?
There is no known exploitation of CVE-2016-7943 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2016-7943, DEBIAN-CVE-2016-7943, GHSA-84fh-jqg7-vh26, UBUNTU-CVE-2016-7943.