high
7.5
CWE
400 1333
Advisory Published
Advisory Published
Updated

CVE-2022-24836: Inefficient Regular Expression Complexity in Nokogiri

First published: Mon Apr 11 2022(Updated: )

## Summary Nokogiri `< v1.13.4` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. ## Mitigation Upgrade to Nokogiri `>= 1.13.4`. ## Severity The Nokogiri maintainers have evaluated this as [**High Severity** 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References [CWE-1333](https://cwe.mitre.org/data/definitions/1333.html) Inefficient Regular Expression Complexity ## Credit This vulnerability was reported by HackerOne user ooooooo_q (ななおく).

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
redhat/rubygem-nokogiri<0:1.13.8-1.el8
0:1.13.8-1.el8
rubygems/nokogiri<1.13.4
1.13.4
Nokogiri Nokogiri<1.13.4
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Apple macOS>=13.0<13.1
redhat/nokogiri<1.13.4
1.13.4
<13.1
13.1

Remedy

https://github.com/sparklemotion/nokogiri/commit/e444525ef1634b675cd1cf52d39f4320ef0aecfd

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2022-24836?

    CVE-2022-24836 is a vulnerability in Nokogiri < v1.13.4 that allows for excessive backtracking when attempting to detect encoding in HTML documents.

  • How can I mitigate the CVE-2022-24836 vulnerability?

    To mitigate the CVE-2022-24836 vulnerability, upgrade to Nokogiri >= 1.13.4.

  • What is the severity of CVE-2022-24836?

    CVE-2022-24836 has a severity rating of high.

  • What software is affected by CVE-2022-24836?

    The affected software includes Nokogiri < 1.13.4, macOS Ventura 13.1, rubygem-nokogiri 0:1.13.8-1.el8, and redhat/nokogiri.

  • Where can I find more information about CVE-2022-24836?

    You can find more information about CVE-2022-24836 on the following references: - Apple Support: [https://support.apple.com/en-us/HT213532](https://support.apple.com/en-us/HT213532) - GitHub Security Advisory: [https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-crjr-9rc5-ghw8](https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-crjr-9rc5-ghw8) - NVD: [https://nvd.nist.gov/vuln/detail/CVE-2022-24836](https://nvd.nist.gov/vuln/detail/CVE-2022-24836)

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