GHSA-HWFP-HG2M-9VR2

Vulnerability from github – Published: 2021-08-09 20:43 – Updated: 2025-03-27 17:43
VLAI?
Summary
Integer overflow in pywin32
Details

An integer overflow exists in pywin32 prior to version b301 when adding an access control entry (ACE) to an access control list (ACL) that would cause the size to be greater than 65535 bytes. An attacker who successfully exploited this vulnerability could crash the vulnerable process.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pywin32"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "301"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32559"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-07-07T16:45:27Z",
    "nvd_published_at": "2021-07-06T12:15:00Z",
    "severity": "HIGH"
  },
  "details": "An integer overflow exists in pywin32 prior to version b301 when adding an access control entry (ACE) to an access control list (ACL) that would cause the size to be greater than 65535 bytes. An attacker who successfully exploited this vulnerability could crash the vulnerable process.",
  "id": "GHSA-hwfp-hg2m-9vr2",
  "modified": "2025-03-27T17:43:16Z",
  "published": "2021-08-09T20:43:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32559"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mhammond/pywin32/issues/1700"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mhammond/pywin32/pull/1701"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-hwfp-hg2m-9vr2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0017/FEYE-2021-0017.md"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mhammond/pywin32"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mhammond/pywin32/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pywin32/PYSEC-2021-112.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Integer overflow in pywin32"
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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