CVE-2022-24839 — Uncontrolled Resource Consumption in org.cyberneko.html (nokogiri fork)

Affected: sparklemotion nekohtml

org.cyberneko.html is an html parser written in Java. The fork of `org.cyberneko.html` used by Nokogiri (Rubygem) raises a `java.lang.OutOfMemoryError` exception when parsing ill-formed HTML markup. Users are advised to upgrade to `>= 1.9.22.noko2`. Note: The upstream library `org.cyberneko.html` is no longer maintained. Nokogiri uses its own fork of this library located at https://github.com/sparklemotion/nekohtml and this CVE applies only to that fork. Other forks of nekohtml may have a similar vulnerability.

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

Affected: RubyGems: nokogiri

## 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)

Most recent entries from all

CVE-2022-24839 — Uncontrolled Resource Consumption in org.cyberneko.html (nokogiri fork)

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