CVE-2018-12247 Null dereference in n/a

High 7.5 Published 12 Jun 2018 Updated 16 Sep 2024

A NULL pointer dereference in mruby allows attackers to cause a denial of service via specific clone operations.

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-2018-12247?

CVE-2018-12247 is a high-severity vulnerability in n/a, published on 12 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).

Weakness: CWE-476

Which versions are affected by CVE-2018-12247?

It affects 1 product.

Products include Mruby Mruby.

How do I fix CVE-2018-12247?

No fix has been published for CVE-2018-12247 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-12247 being exploited?

There is no known exploitation of CVE-2018-12247 in the wild and no public exploit code.

Sources

Also known as GHSA-8j6c-c99j-fh4c, UBUNTU-CVE-2018-12247.