gsd-2021-4209
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.
Aliases
Aliases
CVE-2021-4209


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-4209",
    "description": "A NULL pointer dereference flaw was found in GnuTLS. As Nettle\u0027s hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.",
    "id": "GSD-2021-4209",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-4209.html",
      "https://advisories.mageia.org/CVE-2021-4209.html",
      "https://ubuntu.com/security/CVE-2021-4209"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-4209"
      ],
      "details": "A NULL pointer dereference flaw was found in GnuTLS. As Nettle\u0027s hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.",
      "id": "GSD-2021-4209",
      "modified": "2023-12-13T01:23:11.456683Z",
      "schema_version": "1.4.0"
    }
  },
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        "STATE": "PUBLIC"
      },
      "affects": {
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            {
              "product": {
                "product_data": [
                  {
                    "product_name": "GnuTLS",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Fixed in gnutls v3.7.3"
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              }
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    },
    "nvd.nist.gov": {
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      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-10-27T16:57Z",
      "publishedDate": "2022-08-24T16:15Z"
    }
  }
}


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