{
  "schema_version": "1.4.0",
  "id": "GHSA-xxmq-4vph-956w",
  "modified": "2023-03-28T14:44:04Z",
  "published": "2023-03-28T14:44:04Z",
  "aliases": [],
  "summary": "Comrak vulnerable to production of excessive output when parsing Markdown (GHSL-2023-048)",
  "details": "### Impact\n\ncomrak is vulnerable to the upstream cmark issue, [\"Issue revealed by fuzzer\"](https://github.com/commonmark/cmark/issues/354). A large number of references in a markdown document can trigger an overly large response.\n\n### Patches\n\n0.17.0 contains https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a, which limits reference output to a 100Kb maximum.\n\n### Workarounds\n\nn/a\n\n### References\n\n* https://github.com/commonmark/cmark/issues/354",
  "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-xxmq-4vph-956w"
    },
    {
      "type": "WEB",
      "url": "https://github.com/commonmark/cmark/issues/354"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kivikakk/comrak/commit/70f97f3ea4eae30ffbd1b94c764a3de2f1c41d2a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kivikakk/comrak"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kivikakk/comrak/releases/tag/0.17.0"
    }
  ],
  "database_specific": {
    "cwe_ids": [],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-28T14:44:04Z",
    "nvd_published_at": null
  }
}