msrc_cve-2023-41763
Vulnerability from csaf_microsoft
Published
2023-10-10 07:00
Modified
2023-10-10 07:00
Summary
Skype for Business Elevation of Privilege Vulnerability

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.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      },
      {
        "names": [
          "Dr. Florian Hauser (@frycos) with Code White GmbH"
        ]
      },
      {
        "names": [
          "Anonymous"
        ]
      },
      {
        "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-2023-41763 Skype for Business Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763"
      },
      {
        "category": "self",
        "summary": "CVE-2023-41763 Skype for Business Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/2023/msrc_cve-2023-41763.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 Elevation of Privilege Vulnerability",
    "tracking": {
      "current_release_date": "2023-10-10T07:00:00.000Z",
      "generator": {
        "date": "2025-01-01T02:10:24.763Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-41763",
      "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": "\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"
      },
      {
        "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"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-41763",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "An attacker could make a specially crafted network call to the target Skype for Business server, which could cause the parsing of an http request made to an arbitrary address. This could disclose IP addresses or port numbers or both to the attacker.",
          "title": "How could an attacker exploit this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality) but not all resources within the impacted component may be divulged to the attacker. The attacker cannot make changes to disclosed information (Integrity) or limit access to the resource (Availability).",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L) but have no effect on integrity (I:N) or on availability (A:N). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "In some cases, the exposed sensitive information could provide access to internal networks.",
          "title": "If the successful attacker only could view some sensitive information, how is this an elevation of privilege vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "12223",
          "12224"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-41763 Skype for Business Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763"
        },
        {
          "category": "self",
          "summary": "CVE-2023-41763 Skype for Business Elevation of Privilege Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41763"
        }
      ],
      "remediations": [
        {
          "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"
        },
        {
          "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"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 4.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Exploited:Yes;Latest Software Release:Exploitation Detected"
        }
      ],
      "title": "Skype for Business Elevation of Privilege Vulnerability"
    }
  ]
}


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