Prototype Pollution in qs package for NPM

1) Code Injection

EUVDB-ID: #VU25410

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: N/A

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

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

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

qs: 0.0.1 - 6.3.1

CPE2.3

• cpe:2.3:a:nlf:qs:0.0.1:*:*:*:*:npm:*:*
• cpe:2.3:a:nlf:qs:0.0.2:*:*:*:*:npm:*:*
• cpe:2.3:a:nlf:qs:0.0.3:*:*:*:*:npm:*:*

External links

https://www.npmjs.com/advisories/1469

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.