Type confusion in Ghostscript and GhostXPS - CVE-2018-19477
Published: November 27, 2018
Vulnerability identifier: #VU16072
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-19477
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Artifex Software, Inc.
Affected software:
Ghostscript
GhostXPS
Ghostscript
GhostXPS
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to a JBIG2Decode type confusion condition in the psi/zfjbig2.csource code file. A remote unauthenticated attacker can trick the victim into accessing a PostScript file that submits malicious input to bypass the security access restrictions on the targeted system, which could be used to conduct further attacks.
How to mitigate CVE-2018-19477
Update to version 9.26.