{
  "schema_version": "1.4.0",
  "id": "GHSA-8hqf-xjwp-p67v",
  "modified": "2023-03-28T23:08:31Z",
  "published": "2023-03-28T14:40:29Z",
  "aliases": [
    "CVE-2023-28626"
  ],
  "summary": "Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)",
  "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",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "comrak"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.17.0"
            }
          ]
        }
      ]
    }
  ],
  "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"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-28T14:40:29Z",
    "nvd_published_at": "2023-03-28T21:15:00Z"
  }
}