#VU66748 Prototype pollution in dojox - CVE-2020-5259

Vulnerability identifier: #VU66748

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-5259

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
dojox
Web applications / Modules and components for CMS

Vendor: JS Foundation

Description

The disclosed vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to insufficient sanitization of user-supplied data within the jqMix method. A remote attacker can inject and execute arbitrary JavaScript script code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

dojox: 1.11.0 - 1.16.1

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External links
https://github.com/dojo/dojox/commit/47d1b302b5b23d94e875b77b9b9a8c4f5622c9da
https://github.com/dojo/dojox/security/advisories/GHSA-3hw5-q855-g6cw
https://lists.debian.org/debian-lts-announce/2020/03/msg00012.html

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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.