msrc_cve-2022-40674
Vulnerability from csaf_microsoft
Published
2022-09-02 00:00
Modified
2022-09-17 00:00
Summary
libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.

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-2022-40674 libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-40674.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": "libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.",
    "tracking": {
      "current_release_date": "2022-09-17T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T23:55:36.231Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-40674",
      "initial_release_date": "2022-09-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2022-09-16T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2022-09-17T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added expat to CBL-Mariner 1.0"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              },
              {
                "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_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 expat 2.4.9-1",
                "product": {
                  "name": "\u003ccm1 expat 2.4.9-1",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 expat 2.4.9-1",
                "product": {
                  "name": "cm1 expat 2.4.9-1",
                  "product_id": "18618"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 expat 2.4.8-2",
                "product": {
                  "name": "\u003ccbl2 expat 2.4.8-2",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 expat 2.4.8-2",
                "product": {
                  "name": "cbl2 expat 2.4.8-2",
                  "product_id": "18619"
                }
              }
            ],
            "category": "product_name",
            "name": "expat"
          },
          {
            "category": "product_name",
            "name": "azl3 cmake 3.30.3-6",
            "product": {
              "name": "azl3 cmake 3.30.3-6",
              "product_id": "3"
            }
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 cmake 3.30.3-6 as a component of Azure Linux 3.0",
          "product_id": "17084-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 expat 2.4.9-1 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 expat 2.4.9-1 as a component of CBL Mariner 1.0",
          "product_id": "18618-16820"
        },
        "product_reference": "18618",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 expat 2.4.8-2 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 expat 2.4.8-2 as a component of CBL Mariner 2.0",
          "product_id": "18619-17086"
        },
        "product_reference": "18619",
        "relates_to_product_reference": "17086"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-40674",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "flags": [
        {
          "label": "vulnerable_code_not_in_execute_path",
          "product_ids": [
            "17084-3"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18618-16820",
          "18619-17086"
        ],
        "known_affected": [
          "16820-2",
          "17086-1"
        ],
        "known_not_affected": [
          "17084-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-40674 libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-40674.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-09-16T00:00:00.000Z",
          "details": "2.4.9-1: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": "2022-09-16T00:00:00.000Z",
          "details": "2.4.8-2: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"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 8.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-2",
            "17086-1"
          ]
        }
      ],
      "title": "libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c."
    }
  ]
}


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