#VU80810 Division by zero in Ghostscript - CVE-2020-21710

Vulnerability identifier: #VU80810

Vulnerability risk: Low

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

CVE-ID: CVE-2020-21710

CWE-ID: CWE-369

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 crash the application.

The vulnerability exists due to a divide by zero error within the eps_print_page() function in gdevepsn.c. A remote attacker can trick the victim to open a specially crafted PDF file and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ghostscript: 9.10 - 9.50

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External links
https://bugs.ghostscript.com/show_bug.cgi?id=701843
https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=4e713293de84b689c4ab358f3e110ea54aa81925

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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.