{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "\u003ca href=\"https://www.notion.so/dong-uk-kim-91de2ceb59c44c6ea7533b0e8b2e35af\"\u003eKim Dong-Uk (@justlikebono)\u003c/a\u003e"
        ]
      },
      {
        "names": [
          "HAO LI of VenusTech ADLab"
        ]
      },
      {
        "names": [
          "Anonymous  \u003ca href=\"https://www.zerodayinitiative.com/\"\u003eTrend Micro Zero Day Initiative\u003c/a\u003e"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "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"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2024-20677 Microsoft Office Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20677"
      },
      {
        "category": "self",
        "summary": "CVE-2024-20677 Microsoft Office Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/2024/msrc_cve-2024-20677.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "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": "Microsoft Office Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2024-02-23T08:00:00.000Z",
      "generator": {
        "date": "2024-12-31T18:39:19.737Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2024-20677",
      "initial_release_date": "2024-01-09T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-01-09T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2024-01-16T08:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Microsoft is announcing the availability of the security updates for Microsoft Office for Mac. Customers running affected Mac software should install the update for their product to be protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See the [Release Notes](https://go.microsoft.com/fwlink/p/?linkid=831049) for more information and download links."
        },
        {
          "date": "2024-02-13T08:00:00.000Z",
          "legacy_version": "2",
          "number": "3",
          "summary": "In the Security Updates table, added 3D Viewer as it is affected by this vulnerability. In addition, added an FAQ to explain how customers can get the 3D Viewer update."
        },
        {
          "date": "2024-02-23T08:00:00.000Z",
          "legacy_version": "2.1",
          "number": "4",
          "summary": "Updated the Executive Summary with information that the ability to insert FBX files has also been disabled in 3D Viewer as of February 13, 2024. This is an informational change only."
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c7.2401.29012.0",
            "product": {
              "name": "3D Viewer \u003c7.2401.29012.0",
              "product_id": "6"
            }
          },
          {
            "category": "product_version",
            "name": "7.2401.29012.0",
            "product": {
              "name": "3D Viewer 7.2401.29012.0",
              "product_id": "11760"
            }
          }
        ],
        "category": "product_name",
        "name": "3D Viewer"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003chttps://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office 2019 for 32-bit editions \u003chttps://aka.ms/OfficeSecurityReleases",
              "product_id": "8"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office 2019 for 32-bit editions https://aka.ms/OfficeSecurityReleases",
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            }
          }
        ],
        "category": "product_name",
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      },
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              "product_id": "7"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office 2019 for 64-bit editions https://aka.ms/OfficeSecurityReleases",
              "product_id": "11574"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Office 2019 for 64-bit editions"
      },
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            "name": "\u003chttps://aka.ms/OfficeSecurityReleases",
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              "product_id": "5"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases",
              "product_id": "11762"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft 365 Apps for Enterprise for 32-bit Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003chttps://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems \u003chttps://aka.ms/OfficeSecurityReleases",
              "product_id": "4"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases",
              "product_id": "11763"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.81.24011420",
            "product": {
              "name": "Microsoft Office LTSC for Mac 2021 \u003c16.81.24011420",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "16.81.24011420",
            "product": {
              "name": "Microsoft Office LTSC for Mac 2021 16.81.24011420",
              "product_id": "11951"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Office LTSC for Mac 2021"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003chttps://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office LTSC 2021 for 64-bit editions \u003chttps://aka.ms/OfficeSecurityReleases",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office LTSC 2021 for 64-bit editions https://aka.ms/OfficeSecurityReleases",
              "product_id": "11952"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Office LTSC 2021 for 64-bit editions"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003chttps://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office LTSC 2021 for 32-bit editions \u003chttps://aka.ms/OfficeSecurityReleases",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "https://aka.ms/OfficeSecurityReleases",
            "product": {
              "name": "Microsoft Office LTSC 2021 for 32-bit editions https://aka.ms/OfficeSecurityReleases",
              "product_id": "11953"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Office LTSC 2021 for 32-bit editions"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-20677",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally.\nFor example, when the score indicates that the Attack Vector is Local and User Interaction is Required, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.",
          "title": "According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploits this vulnerability could perform a remote attack that could enable access to the victim\u0027s information and the ability to alter information. Successful exploitation could also potentially cause downtime for the targeted environment.",
          "title": "According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of confidentiality (C:H), integrity (I:H), and availability (A:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "No, the Preview Pane is not an attack vector.",
          "title": "Is the Preview Pane an attack vector for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "The security update for Microsoft Office 2021 for Mac is not immediately available.  The update will be released as soon as possible, and when it is available, customers will be notified via a revision to this CVE information.",
          "title": "Are the updates for the Microsoft Office 2021 for Mac currently available?"
        },
        {
          "category": "faq",
          "text": "The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details.\nIt is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers.\nCustomers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations.\nApp package versions 7.2401.29012.0 and later contain this update.\nYou can check the package version in PowerShell:\nGet-AppxPackage -Name Microsoft.Microsoft3DViewer",
          "title": "How do I get the updated app?"
        },
        {
          "category": "faq",
          "text": "Please see the Microsoft Support Blog Post relating to the disablement of the ability to insert FBX (.fbx files) here: https://prod.support.services.microsoft.com/en-us/topic/9f2387f1-84ec-496a-a288-2c6f774db219",
          "title": "Where can I find more information?"
        },
        {
          "category": "faq",
          "text": "Please see the Microsoft Support Blog Post relating to the disablement of the ability to insert FBX (.fbx files) in 3D Viewer here: https://prod.support.services.microsoft.com/en-us/windows/support-for-fbx-files-has-been-turned-off-in-3d-viewer-b7483e83-422c-4d65-b94d-853eb65cb134.",
          "title": "Where can I find more information regarding 3D Viewer?"
        }
      ],
      "product_status": {
        "fixed": [
          "11573",
          "11574",
          "11760",
          "11762",
          "11763",
          "11951",
          "11952",
          "11953"
        ],
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-20677 Microsoft Office Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20677"
        },
        {
          "category": "self",
          "summary": "CVE-2024-20677 Microsoft Office Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20677"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-01-09T08:00:00.000Z",
          "details": "7.2401.29012.0:Security Update:https://www.microsoft.com/en-us/p/3d-viewer/9nblggh42ths?activetab=pivot:overviewtab",
          "product_ids": [
            "6"
          ],
          "url": "https://www.microsoft.com/en-us/p/3d-viewer/9nblggh42ths?activetab=pivot:overviewtab"
        },
        {
          "category": "vendor_fix",
          "date": "2024-01-09T08:00:00.000Z",
          "details": "https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates",
          "product_ids": [
            "8",
            "7",
            "5",
            "4",
            "2",
            "1"
          ],
          "url": "https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates"
        },
        {
          "category": "vendor_fix",
          "date": "2024-01-09T08:00:00.000Z",
          "details": "16.81.24011420:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049",
          "product_ids": [
            "3"
          ],
          "url": "https://go.microsoft.com/fwlink/p/?linkid=831049"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.8,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Office Remote Code Execution Vulnerability"
    }
  ]
}