high
7.8
CWE
697 1333 400
Advisory Published
Advisory Published
Updated

CVE-2021-3807: Inefficient Regular Expression Complexity in chalk/ansi-regex

First published: Fri Sep 17 2021(Updated: )

A regular expression denial of service (ReDoS) vulnerability was found in nodejs-ansi-regex. This could possibly cause an application using ansi-regex to use an excessive amount of CPU time when matching crafted ANSI escape codes.

Credit: security@huntr.dev

Affected SoftwareAffected VersionHow to fix
npm/ansi-regex>=3.0.0<3.0.1
3.0.1
npm/ansi-regex>=4.0.0<4.1.1
4.1.1
npm/ansi-regex>=5.0.0<5.0.1
5.0.1
npm/ansi-regex>=6.0.0<6.0.1
6.0.1
redhat/nodejs-nodemon<0:2.0.19-1.el9_0
0:2.0.19-1.el9_0
redhat/rh-nodejs14-nodejs<0:14.18.2-1.el7
0:14.18.2-1.el7
redhat/rh-nodejs14-nodejs-nodemon<0:2.0.3-6.el7
0:2.0.3-6.el7
redhat/ovirt-engine-ui-extensions<0:1.3.3-1.el8e
0:1.3.3-1.el8e
redhat/ovirt-web-ui<0:1.9.0-1.el8e
0:1.9.0-1.el8e
redhat/nodejs-ansi-regex<6.0.1
6.0.1
redhat/nodejs-ansi-regex<5.0.1
5.0.1
Ansi-regex Project Ansi-regex>=4.0.0<4.1.1
Ansi-regex Project Ansi-regex=3.0.0
Ansi-regex Project Ansi-regex=5.0.0
Ansi-regex Project Ansi-regex=6.0.0
Oracle Communications Cloud Native Core Policy=1.15.0
IBM Cognos Analytics 11.2.x<=IBM Cognos Analytics 11.2.x
IBM Cognos Analytics 11.1.x<=IBM Cognos Analytics 11.1.x

Remedy

https://github.com/chalk/ansi-regex/commit/8d1d7cdb586269882c4bdc1b7325d0c58c8f76f9

Remedy

https://huntr.dev/bounties/5b3cf33b-ede0-4398-9974-800876dfd994

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-3807?

    CVE-2021-3807 is a vulnerability in ansi-regex that allows for inefficient regular expression complexity, leading to a denial of service when parsing invalid ANSI escape codes.

  • How severe is the vulnerability CVE-2021-3807?

    The severity of CVE-2021-3807 is high, with a CVSS score of 7.5.

  • Which software is affected by CVE-2021-3807?

    The affected software includes ansi-regex versions 3.0.0 to 3.0.1, 4.0.0 to 4.1.1, 5.0.0 to 5.0.1, and 6.0.0 to 6.0.1, as well as other packages and products mentioned in the vulnerability description.

  • How can I fix the vulnerability CVE-2021-3807?

    To fix the vulnerability, upgrade ansi-regex to version 3.0.1, 4.1.1, 5.0.1, or 6.0.1, depending on your current version. Make sure to also update any other affected packages or products mentioned in the vulnerability description.

  • Where can I find more information about CVE-2021-3807?

    You can find more information about CVE-2021-3807 on the NIST National Vulnerability Database (NVD) website and the GitHub page for chalk/ansi-regex.

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