CVE-2023-4042 Ghostscript: incomplete fix for cve-2020-16305
Ghostscript in Red Hat Enterprise Linux 8 contains an incomplete fix for a memory corruption flaw, potentially allowing code execution or denial of service.
- 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-2023-4042?
CVE-2023-4042 is a medium-severity memory corruption vulnerability in Artifex Ghostscript, published on 23 Aug 2023. 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 flaw was found in ghostscript. The fix for CVE-2020-16305 in ghostscript was not included in RHSA-2021:1852-06 advisory as it was claimed to be. This issue only affects the ghostscript package as shipped with Red Hat Enterprise Linux 8.
Which versions are affected by CVE-2023-4042?
It affects 9 products.
Products include Artifex Ghostscript, Redhat Codeready Linux Builder, Redhat Codeready Linux Builder for Arm64, Redhat Codeready Linux Builder for Ibm Z Systems, Redhat Codeready Linux Builder for Power Little Endian, Redhat Enterprise Linux and 3 more.
How do I fix CVE-2023-4042?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-4042 being exploited?
There is no known exploitation of CVE-2023-4042 in the wild and no public exploit code.
Other vulnerabilities in Artifex Ghostscript
Sources
Also known as GHSA-jgj3-64jr-4g3x.