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CVE Vulnerabilities

CVE-2021-23364

Inefficient Regular Expression Complexity

Published: Apr 28, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-23364
CWEhttps://cwe.mitre.org/data/definitions/1333.html

The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.

Weakness

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

Affected Software

NameVendorStart VersionEnd Version
BrowserslistBrowserslist_project4.0.0 (including)4.16.5 (excluding)
Red Hat Advanced Cluster Management for Kubernetes 2.3 for RHEL 8RedHatrhacm2/kui-web-terminal-rhel8:v2.3.0-51*
Red Hat Advanced Cluster Management for Kubernetes 2.3 for RHEL 8RedHatrhacm2/search-api-rhel8:v2.3.0-46*
Red Hat Quay 3RedHatquay/quay-rhel8:v3.6.0-62*
Node-browserslistUbuntubionic*
Node-browserslistUbuntufocal*
Node-browserslistUbuntugroovy*
Node-browserslistUbuntuhirsute*
Node-browserslistUbuntuimpish*
Node-browserslistUbuntukinetic*
Node-browserslistUbuntutrusty*
Node-browserslistUbuntuupstream*

Extended Description

	  Attackers can create crafted inputs that
	  intentionally cause the regular expression to use
	  excessive backtracking in a way that causes the CPU
	  consumption to spike.

Potential Mitigations

References

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