Vulnerability identifier: #VU26304

Vulnerability risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-7608

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
yargs-parser
Universal components / Libraries / Libraries used by multiple products

Vendor: yargs

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request and add or modify properties of Object.prototype using a "__proto__" payload.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

yargs-parser: 13.0.0 - 18.1.0

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External links
http://snyk.io/vuln/SNYK-JS-YARGSPARSER-560381

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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.