OS command injection in Ghostscript - CVE-2018-16509
Published: September 7, 2018 / Updated: June 9, 2021
Vulnerability identifier: #VU14690
CSH Severity: High
CVSS v4.0: 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:A/U:Amber
CVE-ID: CVE-2018-16509
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Artifex Software, Inc.
Affected software:
Ghostscript
Ghostscript
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to /invalidaccess checks can be bypassed after a restore failure. A remote unauthenticated attacker can trick the victim into opening a specially crafted PostScript file that submits malicious input and execute arbitrary shell commands.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: original fix for this vulnerability was incomplete in version 9.24. Vendor has issued another patch.
How to mitigate CVE-2018-16509
Update to version 9.25.