CVE-2022-2085 Null dereference in GhostScript
An attacker can cause a denial of service by triggering a NULL pointer dereference in Ghostscript when processing images with more than 64 bits per pixel.
- 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-2022-2085?
CVE-2022-2085 is a medium-severity vulnerability in Artifex Ghostscript, published on 16 Jun 2022. 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 NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.
Weakness: CWE-476
Which versions are affected by CVE-2022-2085?
It affects 2 products.
Products include Artifex Ghostscript, Fedoraproject Fedora.
How do I fix CVE-2022-2085?
Apply the vendor's patch.
Is CVE-2022-2085 being exploited?
There is no known exploitation of CVE-2022-2085 in the wild and no public exploit code.
Other vulnerabilities in Artifex Ghostscript
Sources
Also known as DEBIAN-CVE-2022-2085, GHSA-8932-gr4r-9hpv, OESA-2022-1754, UBUNTU-CVE-2022-2085.