CVE-2019-6991 Memory corruption in n/a

Critical 9.8 Published 28 Jan 2019 Updated 17 Sep 2024

An unauthenticated attacker can execute arbitrary code via a stack-based buffer overflow in the zmu binary by supplying a long username.

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

What is CVE-2019-6991?

CVE-2019-6991 is a critical memory corruption vulnerability in Zoneminder Zoneminder, published on 28 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A classic Stack-based buffer overflow exists in the zmLoadUser() function in zm_user.cpp of the zmu binary in ZoneMinder through 1.32.3, allowing an unauthenticated attacker to execute code via a long username.

Weakness: CWE-787

Which versions are affected by CVE-2019-6991?

It affects 1 product.

Products include Zoneminder Zoneminder.

How do I fix CVE-2019-6991?

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-2019-6991 being exploited?

There is no known exploitation of CVE-2019-6991 in the wild and no public exploit code.

All Zoneminder Zoneminder vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-6991, GHSA-j63x-h9vw-pgh3, UBUNTU-CVE-2019-6991.