gsd-2016-9243
Vulnerability from gsd
Modified
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


To clipboard 

{
  "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": {
      "aliases": [
        "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"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2016-9243",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
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      },
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      },
      "references": {
        "reference_data": [
          {
            "name": "FEDORA-2016-2d90e27e50",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/"
          },
          {
            "name": "USN-3138-1",
            "refsource": "UBUNTU",
            "url": "http://www.ubuntu.com/usn/USN-3138-1"
          },
          {
            "name": "https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874",
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            "url": "https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874"
          },
          {
            "name": "FEDORA-2016-d3a2b640ce",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/"
          },
          {
            "name": "94216",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/94216"
          },
          {
            "name": "[oss-security] 20161109 Re: CVE Request: Cryptography 1.5.3: HKDF might return an empty byte-string",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2016/11/09/2"
          },
          {
            "name": "https://cryptography.io/en/latest/changelog",
            "refsource": "CONFIRM",
            "url": "https://cryptography.io/en/latest/changelog"
          },
          {
            "name": "FEDORA-2016-e77c8c1f3b",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/"
          },
          {
            "name": "https://github.com/pyca/cryptography/issues/3211",
            "refsource": "CONFIRM",
            "url": "https://github.com/pyca/cryptography/issues/3211"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "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",
          "identifiers": [
            "CVE-2016-9243"
          ],
          "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": [
            "http://seclists.org/oss-sec/2016/q4/360",
            "https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874",
            "https://github.com/pyca/cryptography/issues/3211"
          ],
          "uuid": "8a342fb1-daed-4a91-a217-9ad6c19d7bc9"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.5.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2016-9243"
        },
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        "description": {
          "description_data": [
            {
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              "value": "HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-20"
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        },
        "references": {
          "reference_data": [
            {
              "name": "FEDORA-2016-d3a2b640ce",
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              "tags": [
                "Third Party Advisory"
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/"
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            {
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            },
            {
              "name": "[oss-security] 20161109 Re: CVE Request: Cryptography 1.5.3: HKDF might return an empty byte-string",
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      },
      "impact": {
        "baseMetricV2": {
          "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
        },
        "baseMetricV3": {
          "cvssV3": {
            "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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