What’s Vulnerable › Vulnerabilities

GHSA-gx8x-g87m-h5q6: Denial of Service (DoS) in Nokogiri on JRuby

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• Public exploit or detection template: none known
• Published: 2022-04-11 · updated 2024-12-05
• Weakness: CWE-400

Description

## Summary Nokogiri `v1.13.4` updates the vendored `org.cyberneko.html` library to `1.9.22.noko2` which addresses [CVE-2022-24839](https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv). That CVE is rated 7.5 (High Severity). See [GHSA-9849-p7jc-9rmv](https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv) for more information. Please note that this advisory only applies to the **JRuby** implementation of Nokogiri `< 1.13.4`. ## Mitigation Upgrade to Nokogiri `>= 1.13.4`. ## Impact ### [CVE-2022-24839](https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv) in nekohtml - **Severity**: High 7.5 - **Type**: [CWE-400](https://cwe.mitre.org/data/definitions/400.html) Uncontrolled Resource Consumption - **Description**: The fork of `org.cyberneko.html` used by Nokogiri (Rubygem) raises a `java.lang.OutOfMemoryError` exception when parsing ill-formed HTML markup. - **See also**: [GHSA-9849-p7jc-9rmv](https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv)

Affected products

• Rubygems Nokogiri: before 1.13.4; 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 (+137) — fixed in 1.13.4

How to fix

Upgrade to a fixed version: Rubygems Nokogiri 1.13.4. Check the vendor advisory for mitigations.

References

• https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv
• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-gx8x-g87m-h5q6
• https://nvd.nist.gov/vuln/detail/CVE-2022-24839
• https://github.com/sparklemotion/nekohtml/commit/a800fce3b079def130ed42a408ff1d09f89e773d
• https://github.com/sparklemotion/nokogiri
• https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.4
• https://groups.google.com/g/ruby-security-ann/c/vX7qSjsvWis/m/TJWN4oOKBwAJ?utm_medium=email&utm_source=footer

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