#VU82314 Prototype pollution in zrender - CVE-2021-39227

Vulnerability identifier: #VU82314

Vulnerability risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2021-39227

CWE-ID: CWE-1321

Exploitation vector: Network

Exploit availability: No

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

Vendor: Baidu EFE team

Description

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

The vulnerability exists due to improper input validation. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in information disclosure or data manipulation.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

zrender: before 5.2.1

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External links
https://github.com/ecomfe/zrender/security/advisories/GHSA-fhv8-fx5f-7fxf
https://github.com/ecomfe/zrender/pull/826
https://github.com/ecomfe/zrender/releases/tag/5.2.1

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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.