CVE-2021-21252 Regular expression denial of service in jquery-validation
An attacker can cause a denial of service in applications using the jQuery Validation Plugin by exploiting vulnerable regular expressions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-21252?
CVE-2021-21252 is a medium-severity denial of service vulnerability in Netapp Snapcenter, published on 13 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The jQuery Validation Plugin provides drop-in validation for your existing forms. It is published as an npm package "jquery-validation". jquery-validation before version 1.19.3 contains one or more regular expressions that are vulnerable to ReDoS (Regular Expression Denial of Service). This is fixed in 1.19.3.
Weakness: CWE-400
Which versions are affected by CVE-2021-21252?
4 open source packages ship an affected version, including jQuery.Validation and jquery-validation. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
jQuery.Validation NuGet | All versions | 1.19.3 |
jQuery.Validation NuGet | All versions | 1.19.3 |
jquery-validation npm | All versions | 1.19.3 |
jquery-validation npm | All versions | 1.19.3 |
Products include Jqueryvalidation Jquery Validation, Netapp Snapcenter.
How do I fix CVE-2021-21252?
Upgrade jQuery.Validation to 1.19.3 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-21252 being exploited?
There is no known exploitation of CVE-2021-21252 in the wild and no public exploit code.
Other vulnerabilities in Netapp Snapcenter
Sources
Also known as DEBIAN-CVE-2021-21252, GHSA-jxwx-85vp-gvwm, UBUNTU-CVE-2021-21252.