ghsa-xh9h-692f-mmg4
Vulnerability from github
Published
2025-08-20 03:30
Modified
2025-08-29 20:14
Severity ?
1.2 (Low) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
Summary
Withdrawn Advisory: Microsoft Knack ReDoS Vulnerability in the Introspection Module
Details

Withdrawn Advisory

This advisory has been withdrawn because the attack surface of this vulnerability is outside of Knack's intended functionality. The maintainer states the following:

These CVEs are invalid. Knack is a CLI framework used by Azure CLI. It's a local library, not a web service. In addition, the regex is used to extract function and parameter docstrings from the source code. It is not used to match user input. Therefore, it does not expose any attack surface. There is no way to use it for ReDoS attack.

This link is maintained to preserve external references.

Original Description

Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module (issue 2 of 2).

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "knack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.12.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-54364"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-21T15:01:00Z",
    "nvd_published_at": "2025-08-20T03:15:35Z",
    "severity": "LOW"
  },
  "details": "### Withdrawn Advisory\nThis advisory has been withdrawn because the attack surface of this vulnerability is outside of Knack\u0027s intended functionality. The maintainer states the following:\n\n\u003e These CVEs are invalid. Knack is a CLI framework used by [Azure CLI](https://github.com/Azure/azure-cli). It\u0027s a local library, not a web service. In addition, the regex is used to extract function and parameter docstrings from the source code. It is not used to match user input. Therefore, it does not expose any attack surface. There is no way to use it for ReDoS attack.\n\nThis link is maintained to preserve external references.\n\n### Original Description\nMicrosoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module (issue 2 of 2).",
  "id": "GHSA-xh9h-692f-mmg4",
  "modified": "2025-08-29T20:14:37Z",
  "published": "2025-08-20T03:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54364"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/knack/issues/281"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/knack/issues/281#issuecomment-3218922941"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/microsoft/knack"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/microsoft-knack-python-package-regular-expression-dos"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Withdrawn Advisory: Microsoft Knack ReDoS Vulnerability in the Introspection Module",
  "withdrawn": "2025-08-29T20:14:37Z"
}


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