Vulnerability-Lookup

GHSA-8HQF-XJWP-P67V

Vulnerability from github – Published: 2023-03-28 14:40 – Updated: 2023-03-28 23:08

Summary

Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)

Details

Impact

A range of quadratic parsing issues from cmark/cmark-gfm are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown.

Patches

0.17.0 contains fixes to known quadratic parsing issues.

Workarounds

n/a

References

https://github.com/commonmark/cmark/issues/255
https://github.com/commonmark/cmark/issues/389
https://github.com/commonmark/cmark/issues/373
https://github.com/commonmark/cmark/issues/299
https://github.com/commonmark/cmark/issues/388
https://github.com/commonmark/cmark/issues/284
https://github.com/commonmark/cmark/issues/218
https://github.com/commonmark/cmark/pull/232
https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65
https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89

Severity ?

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Show details on source website

JSON

To clipboard Create KEV Entry

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "comrak"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.17.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-28626"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-28T14:40:29Z",
    "nvd_published_at": "2023-03-28T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nA range of quadratic parsing issues from `cmark`/`cmark-gfm` are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown.\n\n### Patches\n0.17.0 contains fixes to known quadratic parsing issues.\n\n### Workarounds\n\nn/a\n\n### References\n\n* https://github.com/commonmark/cmark/issues/255\n* https://github.com/commonmark/cmark/issues/389\n* https://github.com/commonmark/cmark/issues/373\n* https://github.com/commonmark/cmark/issues/299\n* https://github.com/commonmark/cmark/issues/388\n* https://github.com/commonmark/cmark/issues/284\n* https://github.com/commonmark/cmark/issues/218\n* https://github.com/commonmark/cmark/pull/232\n* https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65\n* https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89",
  "id": "GHSA-8hqf-xjwp-p67v",
  "modified": "2023-03-28T23:08:31Z",
  "published": "2023-03-28T14:40:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kivikakk/comrak/security/advisories/GHSA-8hqf-xjwp-p67v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28626"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/389"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/388"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/373"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/299"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/284"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/255"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/218"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/pull/232"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kivikakk/comrak/commit/ce795b7f471b01589f842dc09af38b025701178d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kivikakk/comrak"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kivikakk/comrak/releases/tag/0.17.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OUYME2VA555X6567H7ORIJQFN4BVGT6N"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTWZWCT7KCX2KTXTLPUYZ3EHOONG4X46"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VQ3UBC7LE4VPCMZBTADIBL353CH7CPVV"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)"
}

CVE-2023-28626 (GCVE-0-2023-28626)

Vulnerability from cvelistv5 – Published: 2023-03-28 20:14 – Updated: 2025-02-18 19:03

Title

Quadratic runtime when parsing Markdown in comrak

Summary

comrak is a CommonMark + GFM compatible Markdown parser and renderer written in rust. A range of quadratic parsing issues are present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown. This issue has been addressed in version 0.17.0. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as `GHSL-2023-047`

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

URL

Tags

	https://github.com/kivikakk/comrak/security/advis…	x_refsource_CONFIRM
	https://github.com/kivikakk/comrak/commit/ce795b7…	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…
	https://lists.fedoraproject.org/archives/list/pac…
	https://lists.fedoraproject.org/archives/list/pac…

Impacted products

	Vendor	Product	Version
	kivikakk	comrak	Affected: < 0.17.0

Show details on NVD website

JSON

To clipboard Create KEV Entry

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        "metrics": [
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-18T19:02:57.336196Z",
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        "providerMetadata": {
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    "cna": {
      "affected": [
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      "metrics": [
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        "discovery": "UNKNOWN"
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    "datePublished": "2023-03-28T20:14:27.217Z",
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-8HQF-XJWP-P67V

Impact

Patches

Workarounds

References

CVE-2023-28626 (GCVE-0-2023-28626)

Tags

Sightings

Nomenclature