GHSA-FMX4-26R3-WXPF

Vulnerability from github – Published: 2022-03-03 20:28 – Updated: 2024-01-05 15:31
VLAI?
Summary
Integer overflow in cmark-gfm table parsing extension leads to heap memory corruption
Details

Impact

CommonMarker uses cmark-gfm for rendering Github Flavored Markdown. An integer overflow in cmark-gfm's table row parsing may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution.

If affected versions of CommonMarker are used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE).

Patches

This vulnerability has been patched in the following CommonMarker release:

  • v0.23.4

Workarounds

The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling any use of the table extension will prevent this vulnerability from being triggered.

References

  • https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x

Acknowledgements

We would like to thank Felix Wilhelm of Google's Project Zero for reporting this vulnerability

For more information

If you have any questions or comments about this advisory:

Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "commonmarker"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.23.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-22051"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-03T20:28:47Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n\nCommonMarker uses `cmark-gfm` for rendering [Github Flavored Markdown](https://github.github.com/gfm/). An [integer overflow in `cmark-gfm`\u0027s table row parsing](https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x) may lead to heap memory corruption when parsing tables who\u0027s marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution.\n\nIf affected versions of CommonMarker are used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE).\n\n### Patches\n\nThis vulnerability has been patched in the following CommonMarker release:\n\n- v0.23.4\n\n### Workarounds\n\nThe vulnerability exists in the table markdown extensions of `cmark-gfm`. Disabling any use of the table extension will prevent this vulnerability from being triggered.\n\n### References\n\n- https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x\n\n### Acknowledgements\n\nWe would like to thank Felix Wilhelm of Google\u0027s Project Zero for reporting this vulnerability\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [CommonMarker](http://github.com/gjtorikian/commonmarker)",
  "id": "GHSA-fmx4-26r3-wxpf",
  "modified": "2024-01-05T15:31:58Z",
  "published": "2022-03-03T20:28:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gjtorikian/commonmarker/security/advisories/GHSA-fmx4-26r3-wxpf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22051"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gjtorikian/commonmarker/commit/ab4504fd17460627a6ab255bc3c63e8e5fc6aed3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/gjtorikian/commonmarker"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/commonmarker/CVE-2024-22051.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Integer overflow in cmark-gfm table parsing extension leads to heap memory corruption"
}


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  • 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.
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  • 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.



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