CVE-2021-23364: Regular Expression Denial of Service (ReDoS)
First published: Wed Apr 28 2021(Updated: )
Browserslist is vulnerable to a denial of service, caused by a regular expression denial of service (ReDoS) during parsing of queries. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.
Credit: report@snyk.io report@snyk.io report@snyk.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Browserslist Project Browserslist | >=4.0.0<4.16.5 | |
| npm/browserslist | >=4.0.0<4.16.5 | 4.16.5 |
| IBM Cloud Pak for Security (CP4S) | <=1.7.2.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-23364
- https://github.com/browserslist/browserslist/pull/593
- https://github.com/browserslist/browserslist/commit/c091916910dfe0b5fd61caad96083c6709b02d98
- https://github.com/browserslist/browserslist/blob/e82f32d1d4100d6bc79ea0b6b6a2d281a561e33c/index.js%23L472-L474
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1277182
- https://snyk.io/vuln/SNYK-JS-BROWSERSLIST-1090194
- https://github.com/advisories/GHSA-w8qv-6jwh-64r5 (Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/200951
- https://www.ibm.com/support/pages/node/6493729 (Advisory)
- https://access.redhat.com/errata/RHSA-2021:3016
- https://access.redhat.com/security/cve/cve-2021-23364
- https://access.redhat.com/errata/RHSA-2021:3917
- https://bugzilla.redhat.com/show_bug.cgi?id=1955619
- https://www.cve.org/CVERecord?id=CVE-2021-23364 https://nvd.nist.gov/vuln/detail/CVE-2021-23364
Frequently Asked Questions
What is CVE-2021-23364?
CVE-2021-23364 is a vulnerability in the package browserslist from version 4.0.0 to 4.16.5 that allows for regular expression denial of service (ReDoS) attacks.
How severe is CVE-2021-23364?
CVE-2021-23364 has a severity score of 5.3 out of 10, which is considered medium.
How does CVE-2021-23364 affect Browserslist?
CVE-2021-23364 affects Browserslist versions 4.0.0 to 4.16.5, and can be exploited by sending specially-crafted requests to cause a denial of service.
How can I fix CVE-2021-23364?
To fix CVE-2021-23364, you should update Browserslist to version 4.16.6 or later.
Where can I find more information about CVE-2021-23364?
You can find more information about CVE-2021-23364 on the NIST National Vulnerability Database (NVD) website.
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