Denial of service in Artifex Ghostscript

1) Out-of-bounds read

EUVDB-ID: #VU8078

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-11714

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to out-of-bounds read in the igc_reloc_struct_ptr function in psi/igc.c when handling references to the scanner state structure by psi/ztoken.c. A remote attacker can send a specially crafted PostScript document, trick the victim into processing it, trigger out-of-bounds read and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update to the latest version.

Vulnerable software versions

Ghostscript: 9.21

External links

http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=671fd59eb

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.