GHSA-pxvg-2qj5-37jq: Nokogiri Nokogiri Updates Packaged Libxml2 To Vulnerability

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Advisory Summary

GHSA-pxvg-2qj5-37jq is a MODERATE nokogiri updates packaged libxml2 to vulnerability (General Security Weakness) affecting Nokogiri libraries in the RubyGems ecosystem. The issue involves nokogiri updates packaged libxml2 to v2.10.4 to resolve multiple cves. Remediation is available by upgrading affected packages to version 1.14.3.

GHSA-pxvg-2qj5-37jq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-pxvg-2qj5-37jq
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Nokogiri
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix GHSA-pxvg-2qj5-37jq

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: 1.14.3 
Upgrade nokogiri to 1.14.3
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-pxvg-2qj5-37jq, 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 1.14.3), 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 General Security Weakness. 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 v1.14.3 upgrades the packaged version of its dependency libxml2 to [v2.10.4](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4) from v2.10.3. libxml2 v2.10.4 addresses the following known vulnerabilities: - [CVE-2023-29469](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29469): Hashing of empty dict strings isn't deterministic - [CVE-2023-28484](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28484): Fix null deref in xmlSchemaFixupComplexType - Schemas: Fix null-pointer-deref in xmlSchemaCheckCOSSTDerivedOK Please note that this advisory only applies to the CRuby implementation of Nokogiri `< 1.14.3`, 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. ### Mitigation Upgrade to Nokogiri `>= 1.14.3`. Users who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against external libraries libxml2 `>= 2.10.4` which will also address these same issues. ### Impact No public information has yet been published about the security-related issues other than the upstream commits. Examination of those changesets indicate that the more serious issues relate to libxml2 dereferencing NULL pointers and potentially segfaulting while parsing untrusted inputs. The commits can be examined at: - [[CVE-2023-29469] Hashing of empty dict strings isn't deterministic (09a2dd45) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64) - [[CVE-2023-28484] Fix null deref in xmlSchemaFixupComplexType (647e072e) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f) - [schemas: Fix null-pointer-deref in xmlSchemaCheckCOSSTDerivedOK (4c6922f7) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6)

GHSA-pxvg-2qj5-37jq Affected Nokogiri Versions

1 component(s)
Fixed Versions:
1.14.3
Product / Package Ecosystem Affected Versions Fixed Version
nokogiri
gem/nokogiri
RubyGems
< 1.14.3
1.14.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-pxvg-2qj5-37jq
MITRE CVE Database — GHSA-pxvg-2qj5-37jq MITRE
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28484
MITRE CVE Database — GHSA-pxvg-2qj5-37jq MITRE
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29469
Nokogiri Source Repository REPOSITORY
https://github.com/sparklemotion/nokogiri
gitlab.gnome.org/gnome/libxml2/-/com... WEB
https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64
gitlab.gnome.org/gnome/libxml2/-/com... WEB
https://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6
gitlab.gnome.org/gnome/libxml2/-/com... WEB
https://gitlab.gnome.org/GNOME/libxml2/-/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f
gitlab.gnome.org/gnome/libxml2/-/rel... WEB
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4

Frequently Asked Questions

What is GHSA-pxvg-2qj5-37jq?
GHSA-pxvg-2qj5-37jq is a security vulnerability in Nokogiri involving Nokogiri updates packaged libxml2 to v2.10.4 to resolve multiple CVEs under General Security Weakness.
Which Nokogiri versions are affected?
Affected versions include releases prior to 1.14.3 across affected packages: nokogiri.
What version fixes GHSA-pxvg-2qj5-37jq?
Upgrading to 1.14.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nokogiri affected?
Yes, nokogiri is affected in releases prior to 1.14.3. Upgrade your dependency to 1.14.3 or later.
What CWE is associated with GHSA-pxvg-2qj5-37jq?
GHSA-pxvg-2qj5-37jq is classified under General Security Weakness.
How can I check RubyGems dependencies for GHSA-pxvg-2qj5-37jq?
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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pxvg-2qj5-37jq",
  "modified" : "2023-04-11T21:48:01Z",
  "published" : "2023-04-11T21:48:01Z",
  "aliases" : [ ],
  "summary" : "Nokogiri updates packaged libxml2 to v2.10.4 to resolve multiple CVEs",
  "details" : "### Summary\n\nNokogiri v1.14.3 upgrades the packaged version of its dependency libxml2 to [v2.10.4](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4) from v2.10.3.\n\nlibxml2 v2.10.4 addresses the following known vulnerabilities:\n\n- [CVE-2023-29469](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29469): Hashing of empty dict strings isn't deterministic\n- [CVE-2023-28484](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28484): Fix null deref in xmlSchemaFixupComplexType\n- Schemas: Fix null-pointer-deref in xmlSchemaCheckCOSSTDerivedOK\n\nPlease note that this advisory only applies to the CRuby implementation of Nokogiri `< 1.14.3`, 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\n\n### Mitigation\n\nUpgrade to Nokogiri `>= 1.14.3`.\n\nUsers who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against external libraries libxml2 `>= 2.10.4` which will also address these same issues.\n\n\n### Impact\n\nNo public information has yet been published about the security-related issues other than the upstream commits. Examination of those changesets indicate that the more serious issues relate to libxml2 dereferencing NULL pointers and potentially segfaulting while parsing untrusted inputs.\n\nThe commits can be examined at:\n\n- [[CVE-2023-29469] Hashing of empty dict strings isn't deterministic (09a2dd45) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64)\n- [[CVE-2023-28484] Fix null deref in xmlSchemaFixupComplexType (647e072e) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f)\n- [schemas: Fix null-pointer-deref in xmlSchemaCheckCOSSTDerivedOK (4c6922f7) · Commits · GNOME / libxml2 · GitLab](https://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6)\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "nokogiri"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.14.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-pxvg-2qj5-37jq"
  }, {
    "type" : "WEB",
    "url" : "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28484"
  }, {
    "type" : "WEB",
    "url" : "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29469"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sparklemotion/nokogiri"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/commit/4c6922f763ad958c48ff66f82823ae21f2e92ee6"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/commit/647e072ea0a2f12687fa05c172f4c4713fdb0c4f"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-04-11T21:48:01Z",
    "nvd_published_at" : null
  }
}