{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      }
    ],
    "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-2023-36789 Skype for Business Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36789"
      },
      {
        "category": "self",
        "summary": "CVE-2023-36789 Skype for Business Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2023/msrc_cve-2023-36789.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": "Skype for Business Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2023-10-10T07:00:00.000Z",
      "generator": {
        "date": "2025-04-14T22:45:46.577Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-36789",
      "initial_release_date": "2023-10-10T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-10-10T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c7.0.246.530",
            "product": {
              "name": "Skype for Business Server 2019 CU7 \u003c7.0.246.530",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "7.0.246.530",
            "product": {
              "name": "Skype for Business Server 2019 CU7 7.0.246.530",
              "product_id": "12223"
            }
          }
        ],
        "category": "product_name",
        "name": "Skype for Business Server 2019 CU7"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c6.0.9319.869",
            "product": {
              "name": "Skype for Business Server 2015 CU13 \u003c6.0.9319.869",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "6.0.9319.869",
            "product": {
              "name": "Skype for Business Server 2015 CU13 6.0.9319.869",
              "product_id": "12224"
            }
          }
        ],
        "category": "product_name",
        "name": "Skype for Business Server 2015 CU13"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-36789",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could execute code in the security context of the \u201cNT AUTHORITY\\Network Service\u201d account.",
          "title": "What privileges could be gained by an attacker who successfully exploited the vulnerability?"
        },
        {
          "category": "faq",
          "text": "Successful exploitation of this vulnerability requires the attacker or targeted user to be granted an administrative role in the Skype for Business Control Panel.\nTo help retain security and role-based access control integrity, add users to the groups that define what role the user performs in management of the Skype for Business Server deployment.",
          "title": "According to the CVSS metric, privileges required is high (PR:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker could exploit this vulnerability by leveraging the OcsPowershell endpoint within Skype for Business 2019 and elevate their privileges to execute code as NT Authority\\Network Service user.\nExploitation of this vulnerability requires the authenticated remote user be granted either the CsVoiceAdministrator or CsServerAdministrator role.",
          "title": "How could an attacker exploit this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "12223",
          "12224"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-36789 Skype for Business Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36789"
        },
        {
          "category": "self",
          "summary": "CVE-2023-36789 Skype for Business Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2023/msrc_cve-2023-36789.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-10-10T07:00:00.000Z",
          "details": "7.0.246.530:Security Update:https://support.microsoft.com/help/4470124",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/4470124"
        },
        {
          "category": "vendor_fix",
          "date": "2023-10-10T07:00:00.000Z",
          "details": "6.0.9319.869:Security Update:https://support.microsoft.com/help/3061064",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/3061064"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Skype for Business Remote Code Execution Vulnerability"
    }
  ]
}