Security restrictions bypass in ghostscript (Alpine package)

Published: 2018-11-22

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-19475
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	ghostscript (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU16071

Risk: Low

CVSSv4.0: 1.2 [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-2018-19475

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to the psi/zdevice2.c source code file fails to check available stack space. 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ghostscript (Alpine package): 9.04-r0 - 9.25-r1

ghostscript (Alpine package):

CPE2.3

External links

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.