GHSA-xc9x-jj77-9p9j: Nokogiri Nokogiri Update Packaged Libxml2 To Vulnerability

MODERATE
CWE-416
Published
Advisory Summary

GHSA-xc9x-jj77-9p9j is a MODERATE nokogiri update packaged libxml2 to vulnerability (CWE-416: Use After Free) affecting Nokogiri libraries in the RubyGems ecosystem. The issue involves nokogiri update packaged libxml2 to v2.12.5 to resolve cve-2024-25062. Remediation is available by upgrading affected packages to version 1.16.2, 1.15.6.

GHSA-xc9x-jj77-9p9j at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-xc9x-jj77-9p9j
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-416: Use After Free
Affected Product Nokogiri
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix GHSA-xc9x-jj77-9p9j

To remediate this vulnerability, upgrade all affected Nokogiri dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

nokogiri fixed: 1.16.2
Upgrade nokogiri to 1.16.2
nokogiri fixed: 1.15.6
Upgrade nokogiri to 1.15.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for nokogiri

How to Check if You Are Affected

To determine whether your application is affected by GHSA-xc9x-jj77-9p9j, inspect your project dependencies for Nokogiri:

inspect dependencies for nokogiri

Analyze the terminal output to locate any version of Nokogiri in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.16.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Nokogiri, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary Nokogiri upgrades its dependency libxml2 as follows: - Nokogiri v1.15.6 upgrades libxml2 to [2.11.7](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.7) from 2.11.6 - Nokogiri v1.16.2 upgrades libxml2 to [2.12.5](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.5) from 2.12.4 libxml2 v2.11.7 and v2.12.5 address the following vulnerability: - CVE-2024-25062 / https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25062 - described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/604 - patched by https://gitlab.gnome.org/GNOME/libxml2/-/commit/92721970 Please note that this advisory only applies to the CRuby implementation of Nokogiri, and only if the _packaged_ libraries are being used. If you've overridden defaults at installation time to use _system_ libraries instead of packaged libraries, you should instead pay attention to your distro's `libxml2` release announcements. JRuby users are not affected. ## Mitigation Upgrade to Nokogiri `~> 1.15.6` or `>= 1.16.2`. Users who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against patched external libxml2 libraries which will also address these same issues. ## Impact From the CVE description, this issue applies to the `xmlTextReader` module (which underlies `Nokogiri::XML::Reader`): > When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free. ## Timeline - 2024-02-04 10:35 EST - this GHSA is drafted without complete details about when the upstream issue was introduced; a request is made of libxml2 maintainers for more detailed information - 2024-02-04 10:48 EST - updated GHSA to reflect libxml2 maintainers' confirmation of affected versions - 2024-02-04 11:54 EST - v1.16.2 published, this GHSA made public - 2024-02-05 10:18 EST - updated with MITRE link to the CVE information, and updated "Impact" section - 2024-03-16 09:03 EDT - v1.15.6 published (see discussion at https://github.com/sparklemotion/nokogiri/discussions/3146), updated mitigation information - 2024-03-18 22:12 EDT - update "affected products" range with v1.15.6 information

GHSA-xc9x-jj77-9p9j Affected Nokogiri Versions

2 component(s)
Fixed Versions:
1.16.21.15.6
Product / Package Ecosystem Affected Versions Fixed Version
nokogiri
RubyGems
≥ 1.16.0
< 1.16.2
1.16.2
nokogiri
RubyGems
< 1.15.6
1.15.6

References

Frequently Asked Questions

What is GHSA-xc9x-jj77-9p9j?
GHSA-xc9x-jj77-9p9j is a security vulnerability in Nokogiri involving Nokogiri update packaged libxml2 to v2.12.5 to resolve CVE-2024-25062 under CWE-416: Use After Free.
Which Nokogiri versions are affected?
Affected versions include releases prior to 1.16.2, 1.15.6 across affected packages: nokogiri.
What version fixes GHSA-xc9x-jj77-9p9j?
Upgrading to 1.16.2, 1.15.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nokogiri affected?
Yes, nokogiri is affected in releases prior to 1.16.2, 1.15.6. Upgrade your dependency to 1.16.2, 1.15.6 or later.
What CWE is associated with GHSA-xc9x-jj77-9p9j?
GHSA-xc9x-jj77-9p9j is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check RubyGems dependencies for GHSA-xc9x-jj77-9p9j?
Run the dependency tree command: 'inspect dependencies for nokogiri'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xc9x-jj77-9p9j",
  "modified" : "2025-05-23T19:16:35Z",
  "published" : "2024-02-05T20:22:56Z",
  "aliases" : [ ],
  "summary" : "Nokogiri update packaged libxml2 to v2.12.5 to resolve CVE-2024-25062",
  "details" : "## Summary\n\nNokogiri upgrades its dependency libxml2 as follows:\n- Nokogiri v1.15.6 upgrades libxml2 to [2.11.7](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.7) from 2.11.6\n- Nokogiri v1.16.2 upgrades libxml2 to [2.12.5](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.5) from 2.12.4\n\nlibxml2 v2.11.7 and v2.12.5 address the following vulnerability:\n\n- CVE-2024-25062 / https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25062\n  - described at https://gitlab.gnome.org/GNOME/libxml2/-/issues/604\n  - patched by https://gitlab.gnome.org/GNOME/libxml2/-/commit/92721970\n\nPlease note that this advisory only applies to the CRuby implementation of Nokogiri, and only if the _packaged_ libraries are being used. If you've overridden defaults at installation time to use _system_ libraries instead of packaged libraries, you should instead pay attention to your distro's `libxml2` release announcements.\n\nJRuby users are not affected.\n\n## Mitigation\n\nUpgrade to Nokogiri `~> 1.15.6` or `>= 1.16.2`.\n\nUsers who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile\nand link Nokogiri against patched external libxml2 libraries which will also address these same\nissues.\n\n## Impact\n\nFrom the CVE description, this issue applies to the `xmlTextReader` module (which underlies `Nokogiri::XML::Reader`):\n\n> When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free.\n\n## Timeline\n\n- 2024-02-04 10:35 EST - this GHSA is drafted without complete details about when the upstream issue was introduced; a request is made of libxml2 maintainers for more detailed information\n- 2024-02-04 10:48 EST - updated GHSA to reflect libxml2 maintainers' confirmation of affected versions\n- 2024-02-04 11:54 EST - v1.16.2 published, this GHSA made public\n- 2024-02-05 10:18 EST - updated with MITRE link to the CVE information, and updated \"Impact\" section\n- 2024-03-16 09:03 EDT - v1.15.6 published (see discussion at https://github.com/sparklemotion/nokogiri/discussions/3146), updated mitigation information\n- 2024-03-18 22:12 EDT - update \"affected products\" range with v1.15.6 information",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "nokogiri"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.16.0"
      }, {
        "fixed" : "1.16.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "nokogiri"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.15.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-xc9x-jj77-9p9j"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-25062"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/GHSA-xc9x-jj77-9p9j.yml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sparklemotion/nokogiri"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sparklemotion/nokogiri/discussions/3146"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/commit/92721970"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/issues/604"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-05T20:22:56Z",
    "nvd_published_at" : null
  }
}