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
To clipboard 

{
  "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"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.