MSRC_CVE-2024-45490

Vulnerability from csaf_microsoft - Published: 2024-08-02 00:00 - Updated: 2025-03-14 00:00
Summary
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.

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-2024-45490 An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-45490.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": "An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.",
    "tracking": {
      "current_release_date": "2025-03-14T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T02:00:16.313Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2024-45490",
      "initial_release_date": "2024-08-02T00:00:00.000Z",
      "revision_history": [
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          "date": "2024-09-13T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2024-10-15T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added expat to Azure Linux 3.0\nAdded expat to CBL-Mariner 2.0"
        },
        {
          "date": "2024-10-18T00:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
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        },
        {
          "date": "2025-03-14T00:00:00.000Z",
          "legacy_version": "1.3",
          "number": "4",
          "summary": "Added python3 to Azure Linux 3.0\nAdded expat to Azure Linux 3.0\nAdded expat to CBL-Mariner 2.0"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
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                  "product_id": "8"
                }
              },
              {
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                "name": "cbl2 expat 2.6.3-1",
                "product": {
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                  "product_id": "17243"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 expat 2.6.3-1",
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                }
              },
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              {
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                "name": "\u003cazl3 expat 2.6.2-1",
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              },
              {
                "category": "product_version",
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            "category": "product_name",
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          },
          {
            "category": "product_name",
            "name": "azl3 python3 3.12.3-5",
            "product": {
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              "product_id": "6"
            }
          },
          {
            "category": "product_name",
            "name": "cbl2 cmake 3.21.4-17",
            "product": {
              "name": "cbl2 cmake 3.21.4-17",
              "product_id": "2"
            }
          },
          {
            "category": "product_name",
            "name": "azl3 cmake 3.30.3-6",
            "product": {
              "name": "azl3 cmake 3.30.3-6",
              "product_id": "7"
            }
          },
          {
            "category": "product_name",
            "name": "cbl2 python3 3.9.19-13",
            "product": {
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              "product_id": "3"
            }
          }
        ],
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      }
    ],
    "relationships": [
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      },
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      },
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      },
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      },
      {
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        "relates_to_product_reference": "17086"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-45490",
      "cwe": {
        "id": "CWE-611",
        "name": "Improper Restriction of XML External Entity Reference"
      },
      "flags": [
        {
          "label": "vulnerable_code_not_in_execute_path",
          "product_ids": [
            "17084-6",
            "17086-2",
            "17084-7",
            "17086-3"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "17243-17086",
          "17641-17084",
          "17783-17084",
          "20147-17086"
        ],
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          "17086-8",
          "17084-5",
          "17084-4",
          "17086-1"
        ],
        "known_not_affected": [
          "17084-6",
          "17086-2",
          "17084-7",
          "17086-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-45490 An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-45490.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-09-13T00:00:00.000Z",
          "details": "2.6.3-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-8",
            "17084-5",
            "17084-4",
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "17086-8",
            "17084-5",
            "17084-4",
            "17086-1"
          ]
        }
      ],
      "title": "An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer."
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.