Debian update for ghostscript

Published: 2019-04-17

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-3838 CVE-2019-3835
CWE-ID	CWE-78 CWE-749
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	ghostscript (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU18055

Risk: High

CVSSv4.0: 6.1 [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-2019-3838

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing PostScript files with Ghostscript. A remote attacker can create a specially crafted PDF file, trick the victim to open it and execute arbitrary commands on the affected system.

Mitigation

Update the affected package to version: 9.26a~dfsg-0+deb9u2.

Vulnerable software versions

ghostscript (Debian package): 9.00~dfsg-1 - 9.26a~dfsg-0+deb9u1

CPE2.3

External links

https://www.debian.org/security/2019/dsa-4432

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.

2) Exposed dangerous method or function

EUVDB-ID: #VU18288

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-3835

CWE-ID: CWE-749 - Exposed Dangerous Method or Function