Vulnerability identifier: #VU67486

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-37264

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
steal
Web applications / JS libraries

Vendor: StealJS

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to prototype pollution flaw in the optionName variable in main.js. A remote attacker can add or modify properties of Object.prototype using a __proto__ or constructor payload and execute arbitrary code on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

steal: 2.2.4

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External links
http://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/main.js#L647
http://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/main.js#L2194
http://github.com/stealjs/steal/issues/1533

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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.