Out-of-bounds write in Ghostscript - CVE-2020-21890
Published: September 14, 2023
Vulnerability identifier: #VU80809
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-21890
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Ghostscript
Ghostscript
Software vendor:
Artifex Software, Inc.
Artifex Software, Inc.
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the clj_media_size() function in devices/gdevclj.c. A remote attacker can trick the victim to open a specially crafted PDF file, trigger an out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install updates from vendor's website.