CVE-2016-9941 Memory corruption in n/a

Critical 9.8 Published Updated

A heap-based buffer overflow in LibVNCClient allows remote servers to cause a crash or execute arbitrary code via crafted messages.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2016-9941?

CVE-2016-9941 is a critical memory corruption vulnerability in n/a, published on 31 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area.

Weakness: CWE-119

Which versions are affected by CVE-2016-9941?

It affects 1 product.

Products include Libvncserver Project Libvncserver.

How do I fix CVE-2016-9941?

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-2016-9941 being exploited?

There is no known exploitation of CVE-2016-9941 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2016-9941, DEBIAN-CVE-2016-9941, GHSA-96f2-683j-mrm6, UBUNTU-CVE-2016-9941.

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