#VU18092 Prototype pollution in jQuery - CVE-2019-11358

Vulnerability identifier: #VU18092

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-11358

CWE-ID: CWE-1321

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
jQuery
Web applications / JS libraries

Vendor: The jQuery 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
Update to version 3.4.0.

Vulnerable software versions

jQuery: 1.0.0 - 3.3.1

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External links
https://github.com/jquery/jquery/pull/4333
https://github.com/jquery/jquery/commit/753d591aea698e57d6db58c9f722cd0808619b1b
https://snyk.io/vuln/SNYK-JS-JQUERY-174006

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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. However, proof of concept for this vulnerability is available.