CVE-2021-43306: Exponential ReDoS in jquery-validation
First published: Sun May 29 2022(Updated: )
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method
Credit: reefs@jfrog.com reefs@jfrog.com reefs@jfrog.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/jquery-validation | <1.19.4 | 1.19.4 |
| JQuery Validation Plugin | <1.19.4 |
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Reference Links
- https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348/
- https://nvd.nist.gov/vuln/detail/CVE-2021-43306
- https://github.com/jquery-validation/jquery-validation/commit/69cb17ed774b427f7e2ffcdf197968231725c30e
- https://github.com/advisories/GHSA-j9m2-h2pv-wvph (Advisory)
- https://github.com/jquery-validation/jquery-validation/pull/2428
- https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348
Frequently Asked Questions
What is the severity of CVE-2021-43306?
CVE-2021-43306 is considered a moderate severity vulnerability due to its potential to cause Denial of Service via regular expression issues.
How do I fix CVE-2021-43306?
To remediate CVE-2021-43306, update the jquery-validation package to version 1.19.4 or later.
What type of vulnerability is CVE-2021-43306?
CVE-2021-43306 is classified as an exponential Regular Expression Denial of Service (ReDoS) vulnerability.
What software is affected by CVE-2021-43306?
The jquery-validation npm package versions prior to 1.19.4 are affected by CVE-2021-43306.
Can CVE-2021-43306 be exploited remotely?
Yes, an attacker can exploit CVE-2021-43306 remotely if they can manipulate input to the vulnerable url2 method.
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