CVE-2022-24803: Asciidoctor include ext Command Injection Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-v222-6mr4-qj29
CVSS 10.0
CWE-78
Published
Advisory Summary

CVE-2022-24803 is a CRITICAL (CVSS 10.0) command injection vulnerability vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Asciidoctor include ext libraries in the RubyGems ecosystem. The issue involves command injection vulnerability in asciidoctor-include-ext. Remediation is available by upgrading affected packages to version 0.4.0.

CVE-2022-24803 at a Glance

CVE Identifier CVE-2022-24803
GHSA Identifier GHSA-v222-6mr4-qj29
Severity CRITICAL
CVSS v3.1 Base Score 10.0
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Asciidoctor include ext
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 10.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-24803

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

asciidoctor-include-ext fixed: 0.4.0
Upgrade asciidoctor-include-ext to 0.4.0
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 asciidoctor-include-ext

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-24803, inspect your project dependencies for Asciidoctor include ext:

inspect dependencies for asciidoctor-include-ext

Analyze the terminal output to locate any version of Asciidoctor include ext in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.0), 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-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Asciidoctor include ext, 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

### Impact Applications using [Asciidoctor (Ruby)](https://github.com/asciidoctor/asciidoctor) with [asciidoctor-include-ext](https://github.com/jirutka/asciidoctor-include-ext) (prior to version 0.4.0), which render user-supplied input in AsciiDoc markup, may allow an attacker to execute arbitrary system commands on the host operating system. ~~This attack is possible even when `allow-uri-read` is disabled!~~ (EDIT: it’s not) ### Patches The vulnerability has been fixed in commit c7ea001 (and further improved in cbaccf3), which is included in version [0.4.0](https://rubygems.org/gems/asciidoctor-include-ext/versions/0.4.0). ### Workarounds ```rb require 'asciidoctor/include_ext' class Asciidoctor::IncludeExt::IncludeProcessor # Overrides superclass private method to mitigate Command Injection # vulnerability in asciidoctor-include-ext <0.4.0. def target_uri?(target) target.downcase.start_with?('http://', 'https://') \ && URI.parse(target).is_a?(URI::HTTP) rescue URI::InvalidURIError false end end ``` ### References * https://sakurity.com/blog/2015/02/28/openuri.html ### Credits This vulnerability was discovered by Joern Schneeweisz from the GitLab Security Research Team. ### For more information See commit message c7ea001. If you have any questions or comments about this advisory open an issue in [jirutka/asciidoctor-include-ext](https://github.com/jirutka/asciidoctor-include-ext/issues/).

CVE-2022-24803 Affected Asciidoctor include ext Versions

1 component(s)
Fixed Versions:
0.4.0
Product / Package Ecosystem Affected Versions Fixed Version
asciidoctor-include-ext
RubyGems
< 0.4.0
0.4.0

References

Frequently Asked Questions

What is CVE-2022-24803?
CVE-2022-24803 is a security vulnerability in Asciidoctor include ext involving Command Injection vulnerability in asciidoctor-include-ext under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Asciidoctor include ext versions are affected?
Affected versions include releases prior to 0.4.0 across affected packages: asciidoctor-include-ext.
What version fixes CVE-2022-24803?
Upgrading to 0.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is asciidoctor-include-ext affected?
Yes, asciidoctor-include-ext is affected in releases prior to 0.4.0. Upgrade your dependency to 0.4.0 or later.
What is the CVSS score of CVE-2022-24803?
CVE-2022-24803 has a CVSS v3.1 base score of 10.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2022-24803?
CVE-2022-24803 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check RubyGems dependencies for CVE-2022-24803?
Run the dependency tree command: 'inspect dependencies for asciidoctor-include-ext'. 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-v222-6mr4-qj29",
  "modified" : "2023-05-16T15:46:19Z",
  "published" : "2022-03-31T23:27:15Z",
  "aliases" : [ "CVE-2022-24803" ],
  "summary" : "Command Injection vulnerability in asciidoctor-include-ext",
  "details" : "### Impact\n\nApplications using [Asciidoctor (Ruby)](https://github.com/asciidoctor/asciidoctor) with [asciidoctor-include-ext](https://github.com/jirutka/asciidoctor-include-ext) (prior to version 0.4.0), which render user-supplied input in AsciiDoc markup, may allow an attacker to execute arbitrary system commands on the host operating system. ~~This attack is possible even when `allow-uri-read` is disabled!~~ (EDIT: it’s not)\n\n\n### Patches\n\nThe vulnerability has been fixed in commit c7ea001 (and further improved in cbaccf3), which is included in version [0.4.0](https://rubygems.org/gems/asciidoctor-include-ext/versions/0.4.0).\n\n### Workarounds\n\n```rb\nrequire 'asciidoctor/include_ext'\n\nclass Asciidoctor::IncludeExt::IncludeProcessor\n  # Overrides superclass private method to mitigate Command Injection\n  # vulnerability in asciidoctor-include-ext <0.4.0.\n  def target_uri?(target)\n    target.downcase.start_with?('http://', 'https://') \\\n      && URI.parse(target).is_a?(URI::HTTP)\n  rescue URI::InvalidURIError\n    false\n  end\nend\n```\n\n### References\n\n* https://sakurity.com/blog/2015/02/28/openuri.html\n\n### Credits\n\nThis vulnerability was discovered by Joern Schneeweisz from the GitLab Security Research Team.\n\n\n### For more information\n\nSee commit message c7ea001.\n\nIf you have any questions or comments about this advisory open an issue in [jirutka/asciidoctor-include-ext](https://github.com/jirutka/asciidoctor-include-ext/issues/).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "asciidoctor-include-ext"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/jirutka/asciidoctor-include-ext/security/advisories/GHSA-v222-6mr4-qj29"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-24803"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jirutka/asciidoctor-include-ext/commit/c7ea001a597c7033575342c51483dab7b87ae155"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jirutka/asciidoctor-include-ext/commit/cbaccf3de533cbca224bf61d0b74e4b84d41d8ee"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jirutka/asciidoctor-include-ext"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/asciidoctor-include-ext/CVE-2022-24803.yml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-31T23:27:15Z",
    "nvd_published_at" : "2022-04-01T00:15:00Z"
  }
}