GSD-2016-9243

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Aliases
Aliases
CVE-2016-9243
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{
  "GSD": {
    "alias": "CVE-2016-9243",
    "description": "HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.",
    "id": "GSD-2016-9243",
    "references": [
      "https://ubuntu.com/security/CVE-2016-9243",
      "https://advisories.mageia.org/CVE-2016-9243.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
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        "CVE-2016-9243"
      ],
      "details": "HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.",
      "id": "GSD-2016-9243",
      "modified": "2023-12-13T01:21:22.015200Z",
      "schema_version": "1.4.0"
    }
  },
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          "affected_range": "\u003c1.5.3",
          "affected_versions": "All versions before 1.5.3",
          "credit": "Markus D\u00f6ring",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-20",
            "CWE-937"
          ],
          "date": "2017-04-04",
          "description": "There\u0027s a bug where HKDF would return an empty byte-string if used with a length less than `algorithm.digest_size`.",
          "fixed_versions": [
            "1.5.3"
          ],
          "identifier": "CVE-2016-9243",
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          "not_impacted": "All versions starting from 1.5.3",
          "package_slug": "pypi/cryptography",
          "pubdate": "2017-03-27",
          "solution": "Upgrade to version 1.5.3 or above.",
          "title": "HKDF might return an empty byte-string",
          "urls": [
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          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2017-04-04T16:00Z",
      "publishedDate": "2017-03-27T17:59Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.