CVE-2017-6451 Memory corruption in n/a

High 7.8 Published 27 Mar 2017 Updated 5 Aug 2024

Local attackers can execute arbitrary code via an out-of-bounds memory write in the NTP MX4200 refclock driver.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2017-6451?

CVE-2017-6451 is a high-severity memory corruption vulnerability in Ntp Ntp, published on 27 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The mx4200_send function in the legacy MX4200 refclock in NTP before 4.2.8p10 and 4.3.x before 4.3.94 does not properly handle the return value of the snprintf function, which allows local users to execute arbitrary code via unspecified vectors, which trigger an out-of-bounds memory write.

Weakness: CWE-787

Which versions are affected by CVE-2017-6451?

It affects 1 product.

Products include Ntp Ntp.

How do I fix CVE-2017-6451?

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-2017-6451 being exploited?

There is no known exploitation of CVE-2017-6451 in the wild and no public exploit code.

All Ntp Ntp vulnerabilities

Sources

Also known as GHSA-mg4x-c4g8-f6h5.