Vulnerability identifier: #VU14496
Vulnerability risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Ghostscript
Universal components / Libraries /
Libraries used by multiple products
Vendor: Artifex Software, Inc.
Description
The vulnerability allows a remote attacker to bypass implemented security restrictions and execute arbitrary system commands.
The vulnerability exists due to improper input validation when processing malformed PostScript, PDF, EPS, or XPS files. A remote attacker can supply a specially crafted file, bypass -dSAFER restrictions and execute arbitrary commands on vulnerable system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Ghostscript: 9.00 - 9.23
External links
http://www.kb.cert.org/vuls/id/332928
http://openwall.com/lists/oss-security/2018/08/21/2
http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=0b6cd1918e1ec4ffd087400a754a845180a4522b
http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=e01e77a36cbb2e0277bc3a63852244bec41be0f6
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.