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Regular Expression Denial of Service in jquery-validation

High severity GitHub Reviewed Published Jan 9, 2021 in jquery-validation/jquery-validation • Updated Aug 31, 2023

Package

nuget jQuery.Validation (NuGet)

Affected versions

< 1.19.3

Patched versions

1.19.3
npm jquery-validation (npm)
< 1.19.3
1.19.3

Description

The GitHub Security Lab team has identified potential security vulnerabilities in jquery.validation.

The project contains one or more regular expressions that are vulnerable to ReDoS (Regular Expression Denial of Service)

This issue was discovered and reported by GitHub team member @erik-krogh (Erik Krogh Kristensen).

References

@staabm staabm published to jquery-validation/jquery-validation Jan 9, 2021
Reviewed Jan 13, 2021
Published to the GitHub Advisory Database Jan 13, 2021
Published by the National Vulnerability Database Jan 13, 2021
Last updated Aug 31, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.423%
(75th percentile)

Weaknesses

CVE ID

CVE-2021-21252

GHSA ID

GHSA-jxwx-85vp-gvwm

Source code

Credits

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