CVE-2020-21683 Memory corruption in n/a

Medium 5.5 Published 10 Aug 2021 Updated 4 Aug 2024

Attackers can cause denial of service via a global buffer overflow when converting xfig files to pstricks format using fig2dev.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2020-21683?

CVE-2020-21683 is a medium-severity memory corruption vulnerability in n/a, published on 10 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A global buffer overflow in the shade_or_tint_name_after_declare_color in genpstricks.c of fig2dev 3.2.7b allows attackers to cause a denial of service (DOS) via converting a xfig file into pstricks format.

Weakness: CWE-120

Which versions are affected by CVE-2020-21683?

It affects 1 product.

Products include Fig2dev Project Fig2dev.

How do I fix CVE-2020-21683?

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-2020-21683 being exploited?

There is no known exploitation of CVE-2020-21683 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2020-21683, GHSA-47mr-c7m9-g85h, UBUNTU-CVE-2020-21683.