msrc_cve-2020-14422
Vulnerability from csaf_microsoft
Published
2020-06-02 00:00
Modified
2020-11-10 00:00
Summary
Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10 v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1; v3.9.0 v3.9.0b4 v3.9.0b5 v3.9.0rc1 v3.9.0rc2.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.


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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2020-14422 Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10 v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1; v3.9.0 v3.9.0b4 v3.9.0b5 v3.9.0rc1 v3.9.0rc2. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-14422.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10 v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1; v3.9.0 v3.9.0b4 v3.9.0b5 v3.9.0rc1 v3.9.0rc2.",
    "tracking": {
      "current_release_date": "2020-11-10T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T17:54:46.582Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2020-14422",
      "initial_release_date": "2020-06-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2020-11-10T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 python3 3.7.10-3",
                "product": {
                  "name": "\u003ccm1 python3 3.7.10-3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 python3 3.7.10-3",
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                }
              }
            ],
            "category": "product_name",
            "name": "python3"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 python3 3.7.10-3 as a component of CBL Mariner 1.0",
          "product_id": "16820-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cm1 python3 3.7.10-3 as a component of CBL Mariner 1.0",
          "product_id": "17032-16820"
        },
        "product_reference": "17032",
        "relates_to_product_reference": "16820"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-14422",
      "cwe": {
        "id": "CWE-682",
        "name": "Incorrect Calculation"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "17032-16820"
        ],
        "known_affected": [
          "16820-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2020-14422 Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10 v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1; v3.9.0 v3.9.0b4 v3.9.0b5 v3.9.0rc1 v3.9.0rc2. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-14422.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-11-10T00:00:00.000Z",
          "details": "3.7.10-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 5.9,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-1"
          ]
        }
      ],
      "title": "Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10 v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4 v3.8.4rc1 v3.8.5 v3.8.6 v3.8.6rc1; v3.9.0 v3.9.0b4 v3.9.0b5 v3.9.0rc1 v3.9.0rc2."
    }
  ]
}


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