Prototype pollution in immer



Published: 2021-10-11
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23436
CWE-ID CWE-94
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		immer
Web applications / JS libraries

Vendor immer

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Prototype pollution

EUVDB-ID: #VU57216

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23436

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

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request to the application and perform prototype pollution.

Note, the vulnerability exists due to incomplete fix for #VU57215.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

immer: 8.0.1 - 9.0.5

External links

http://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266
http://snyk.io/vuln/SNYK-JS-IMMER-1540542
http://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237


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.



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