CVE-2020-25559 Use after free in n/a

High 7.8 Published 16 Sep 2020 Updated 4 Aug 2024

A double free vulnerability in gnuplot allows attackers to potentially execute arbitrary code via the print_set_output command.

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-2020-25559?

CVE-2020-25559 is a high-severity use after free vulnerability in n/a, published on 16 Sep 2020. 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

gnuplot 5.5 is affected by double free when executing print_set_output. This may result in context-dependent arbitrary code execution.

Weakness: CWE-415

Which versions are affected by CVE-2020-25559?

It affects 1 product.

Linux distribution packages (2)

`gnuplot` SUSE:Linux Enterprise Module for Server Applications 15 SP2	All versions	`5.2.2-3.6.1`
`gnuplot` openSUSE:Leap 15.2	All versions	`5.2.2-lp152.6.3.1`

Products include Gnuplot Gnuplot.

How do I fix CVE-2020-25559?

Apply the vendor's patch.

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-2020-25559 being exploited?

There is no known exploitation of CVE-2020-25559 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2020-25559, GHSA-v6mq-89c8-6ff4, MGASA-2021-0127, SUSE-SU-2021:0549-1, UBUNTU-CVE-2020-25559, openSUSE-SU-2021:0345-1.