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org.nokogiri:nekohtml vulnerable to Uncontrolled Resource Consumption

High severity GitHub Reviewed Published Apr 11, 2022 in sparklemotion/nekohtml • Updated Nov 11, 2023

Package

maven org.nokogiri:nekohtml (Maven)

Affected versions

< 1.9.22.noko2

Patched versions

1.9.22.noko2

Description

Summary

The fork of org.cyberneko.html used by Nokogiri (Rubygem) raises a java.lang.OutOfMemoryError exception when parsing ill-formed HTML markup.

Severity

The maintainers have evaluated this as High Severity 7.5 (CVSS3.1).

Mitigation

Upgrade to >= 1.9.22.noko2.

Credit

This vulnerability was reported by 이형관 (windshock).

References

CWE-400 Uncontrolled Resource Consumption

Notes

The upstream library org.cyberneko.html is no longer maintained.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.

References

@flavorjones flavorjones published to sparklemotion/nekohtml Apr 11, 2022
Published by the National Vulnerability Database Apr 11, 2022
Published to the GitHub Advisory Database Jun 22, 2023
Reviewed Jun 22, 2023
Last updated Nov 11, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.268%
(68th percentile)

Weaknesses

CVE ID

CVE-2022-24839

GHSA ID

GHSA-9849-p7jc-9rmv

Source code

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