#VU63447 Division by zero in OpenJPEG - CVE-2018-20845

Vulnerability identifier: #VU63447

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-2018-20845

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenJPEG
Universal components / Libraries / Libraries used by multiple products

Vendor: openjpeg.org

Description

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

The vulnerability exists due to a division by zero error in the functions pi_next_pcrl(), pi_next_cprl(), and pi_next_rpcl() in openmj2/pi.c. A remote attacker can create a specially crafted file, trick the victim into opening it and cause a denial of service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenJPEG: 1.0 - 2.3.0

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External links
https://www.securityfocus.com/bid/108921
https://github.com/uclouvain/openjpeg/pull/1168/commits/c5bd64ea146162967c29bd2af0cbb845ba3eaaaf

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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.