CVE-2017-1000172 Use after free in n/a

Critical 9.8 Published 17 Nov 2017 Updated 16 Sep 2024

A heap use-after-free vulnerability in the Gravity lexer allows attackers to potentially execute arbitrary code.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-1000172?

CVE-2017-1000172 is a critical use after free vulnerability in n/a, published on 17 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.

Weakness: CWE-416

Which versions are affected by CVE-2017-1000172?

It affects 1 product.

Products include Creolabs Gravity.

How do I fix CVE-2017-1000172?

No fix has been published for CVE-2017-1000172 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-1000172 being exploited?

There is no known exploitation of CVE-2017-1000172 in the wild and no public exploit code.

Sources

Also known as GHSA-9h29-g2j9-rh36.