Denial of service in jQuery Validation Plugin



| Updated: 2022-07-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-21252
CWE-ID CWE-185
Exploitation vector Network
Public exploit N/A
Vulnerable software
 jquery-validation
Web applications / JS libraries

Vendor jquery-validation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Incorrect Regular Expression

EUVDB-ID: #VU64914

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-21252

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

jquery-validation: 1.6.0 - 1.19.2

CPE2.3 External links

https://github.com/jquery-validation/jquery-validation/commit/5d8f29eef363d043a8fec4eb86d42cadb5fa5f7d
https://github.com/jquery-validation/jquery-validation/pull/2371
https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
https://security.netapp.com/advisory/ntap-20210219-0005/
https://www.npmjs.com/package/jquery-validation


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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