Code injection in Artifex Ghostscript



| Updated: 2018-10-23
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-18284
CWE-ID CWE-94
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Ghostscript
Universal components / Libraries / Libraries used by multiple products

Vendor Artifex Software, Inc.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Code injection

EUVDB-ID: #VU15463

Risk: High

CVSSv4.0: 7.3 [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:P/U:Amber]

CVE-ID: CVE-2018-18284

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass the sandbox protection mechanism on the target system.

The vulnerability exists due to the failure of the sandbox protection mechanism of the affected software when the 1Policy operator is used. A remote unauthenticated attacker can trick the victim into accessing a PostScript file that submits malicious input, bypass the sandbox protection mechanism and modify or replace error handlers used by the software, which the attacker could use to inject and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Ghostscript: 5.50 - 9.25

CPE2.3 External links

https://git.ghostscript.com/?p=ghostpdl.git;h=8d19fdf63f91f50466b08f23e2d93d37a4c5ea0b


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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