GHSA-V222-6MR4-QJ29

Vulnerability from github – Published: 2022-03-31 23:27 – Updated: 2023-05-16 15:46
VLAI
Summary
Command Injection vulnerability in asciidoctor-include-ext
Details

Impact

Applications using Asciidoctor (Ruby) with 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.

Workarounds

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.

Severity
10.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "asciidoctor-include-ext"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24803"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-31T23:27:15Z",
    "nvd_published_at": "2022-04-01T00:15:00Z",
    "severity": "CRITICAL"
  },
  "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\u2019s 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 \u0027asciidoctor/include_ext\u0027\n\nclass Asciidoctor::IncludeExt::IncludeProcessor\n  # Overrides superclass private method to mitigate Command Injection\n  # vulnerability in asciidoctor-include-ext \u003c0.4.0.\n  def target_uri?(target)\n    target.downcase.start_with?(\u0027http://\u0027, \u0027https://\u0027) \\\n      \u0026\u0026 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/).",
  "id": "GHSA-v222-6mr4-qj29",
  "modified": "2023-05-16T15:46:19Z",
  "published": "2022-03-31T23:27:15Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Command Injection vulnerability in asciidoctor-include-ext"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.