CVE-2019-15693 Memory corruption in TigerVNC

High 7.2 Published Updated

A heap buffer overflow in TigerVNC allows remote attackers to execute arbitrary code via network connectivity.

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

What is CVE-2019-15693?

CVE-2019-15693 is a high-severity memory corruption vulnerability in Kaspersky TigerVNC, published on 26 Dec 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2019-15693?

It affects 1 product.

Products include Tigervnc Tigervnc.

How do I fix CVE-2019-15693?

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-2019-15693 being exploited?

There is no known exploitation of CVE-2019-15693 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-15693, GHSA-xv8c-xf4m-4698, UBUNTU-CVE-2019-15693.

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