msrc_cve-2022-42898
Vulnerability from csaf_microsoft
Published
2022-12-02 00:00
Modified
2024-10-15 00:00
Summary
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC kadmind or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow) and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

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-2022-42898 PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC kadmind or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow) and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has \"a similar bug.\" - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-42898.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": "PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC kadmind or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow) and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has \"a similar bug.\"",
    "tracking": {
      "current_release_date": "2024-10-15T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T00:09:03.044Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-42898",
      "initial_release_date": "2022-12-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-01-06T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2024-10-15T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added samba to Azure Linux 3.0\nAdded heimdal to CBL-Mariner 1.0\nAdded krb5 to CBL-Mariner 1.0\nAdded krb5 to CBL-Mariner 2.0"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              },
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 krb5 1.18.4-3",
                "product": {
                  "name": "\u003ccm1 krb5 1.18.4-3",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 krb5 1.18.4-3",
                "product": {
                  "name": "cm1 krb5 1.18.4-3",
                  "product_id": "18502"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 krb5 1.19.4-1",
                "product": {
                  "name": "\u003ccbl2 krb5 1.19.4-1",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 krb5 1.19.4-1",
                "product": {
                  "name": "cbl2 krb5 1.19.4-1",
                  "product_id": "18504"
                }
              }
            ],
            "category": "product_name",
            "name": "krb5"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 heimdal 7.7.1-1",
                "product": {
                  "name": "\u003ccm1 heimdal 7.7.1-1",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 heimdal 7.7.1-1",
                "product": {
                  "name": "cm1 heimdal 7.7.1-1",
                  "product_id": "18503"
                }
              }
            ],
            "category": "product_name",
            "name": "heimdal"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 samba 4.12.5-6",
                "product": {
                  "name": "\u003ccbl2 samba 4.12.5-6",
                  "product_id": "5"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 samba 4.12.5-6",
                "product": {
                  "name": "cbl2 samba 4.12.5-6",
                  "product_id": "16863"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 samba 4.18.3-1",
                "product": {
                  "name": "\u003cazl3 samba 4.18.3-1",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 samba 4.18.3-1",
                "product": {
                  "name": "azl3 samba 4.18.3-1",
                  "product_id": "16864"
                }
              }
            ],
            "category": "product_name",
            "name": "samba"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 krb5 1.18.4-3 as a component of CBL Mariner 1.0",
          "product_id": "16820-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cm1 krb5 1.18.4-3 as a component of CBL Mariner 1.0",
          "product_id": "18502-16820"
        },
        "product_reference": "18502",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 heimdal 7.7.1-1 as a component of CBL Mariner 1.0",
          "product_id": "16820-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cm1 heimdal 7.7.1-1 as a component of CBL Mariner 1.0",
          "product_id": "18503-16820"
        },
        "product_reference": "18503",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 krb5 1.19.4-1 as a component of CBL Mariner 2.0",
          "product_id": "17086-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 krb5 1.19.4-1 as a component of CBL Mariner 2.0",
          "product_id": "18504-17086"
        },
        "product_reference": "18504",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 samba 4.12.5-6 as a component of CBL Mariner 2.0",
          "product_id": "17086-5"
        },
        "product_reference": "5",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 samba 4.12.5-6 as a component of CBL Mariner 2.0",
          "product_id": "16863-17086"
        },
        "product_reference": "16863",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 samba 4.18.3-1 as a component of Azure Linux 3.0",
          "product_id": "17084-4"
        },
        "product_reference": "4",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 samba 4.18.3-1 as a component of Azure Linux 3.0",
          "product_id": "16864-17084"
        },
        "product_reference": "16864",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-42898",
      "cwe": {
        "id": "CWE-190",
        "name": "Integer Overflow or Wraparound"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18502-16820",
          "18503-16820",
          "18504-17086",
          "16863-17086",
          "16864-17084"
        ],
        "known_affected": [
          "16820-3",
          "16820-2",
          "17086-1",
          "17086-5",
          "17084-4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-42898 PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC kadmind or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow) and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has \"a similar bug.\" - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-42898.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-01-06T00:00:00.000Z",
          "details": "1.18.4-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-3"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-06T00:00:00.000Z",
          "details": "7.7.1-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-06T00:00:00.000Z",
          "details": "1.19.4-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-06T00:00:00.000Z",
          "details": "4.12.5-6:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-5"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-06T00:00:00.000Z",
          "details": "4.18.3-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-4"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-3",
            "16820-2",
            "17086-1",
            "17086-5",
            "17084-4"
          ]
        }
      ],
      "title": "PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC kadmind or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow) and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has \"a similar bug.\""
    }
  ]
}


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