msrc_cve-2023-21762
Vulnerability from csaf_microsoft
Published
2023-01-10 08:00
Modified
2023-01-10 08:00
Summary
Microsoft Exchange Server Spoofing 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.


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{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "\u003ca href=\"https://github.com/zcgonvh\"\u003ezcgonvh\u003c/a\u003e with 360 noah lab"
        ]
      }
    ],
    "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-2023-21762 Microsoft Exchange Server Spoofing Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21762"
      },
      {
        "category": "self",
        "summary": "CVE-2023-21762 Microsoft Exchange Server Spoofing Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/2023/msrc_cve-2023-21762.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 Exchange Server Spoofing Vulnerability",
    "tracking": {
      "current_release_date": "2023-01-10T08:00:00.000Z",
      "generator": {
        "date": "2025-01-01T00:35:27.488Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-21762",
      "initial_release_date": "2023-01-10T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-01-10T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c15.01.2507.017",
            "product": {
              "name": "Microsoft Exchange Server 2016 Cumulative Update 23 \u003c15.01.2507.017",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "15.01.2507.017",
            "product": {
              "name": "Microsoft Exchange Server 2016 Cumulative Update 23 15.01.2507.017",
              "product_id": "12039"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Exchange Server 2016 Cumulative Update 23"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c15.02.1118.021",
            "product": {
              "name": "Microsoft Exchange Server 2019 Cumulative Update 12 \u003c15.02.1118.021",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "15.02.1118.021",
            "product": {
              "name": "Microsoft Exchange Server 2019 Cumulative Update 12 15.02.1118.021",
              "product_id": "12038"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Exchange Server 2019 Cumulative Update 12"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c15.02.0986.037",
            "product": {
              "name": "Microsoft Exchange Server 2019 Cumulative Update 11 \u003c15.02.0986.037",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "15.02.0986.037",
            "product": {
              "name": "Microsoft Exchange Server 2019 Cumulative Update 11 15.02.0986.037",
              "product_id": "11957"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Exchange Server 2019 Cumulative Update 11"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c15.00.1497.045",
            "product": {
              "name": "Microsoft Exchange Server 2013 Cumulative Update 23 \u003c15.00.1497.045",
              "product_id": "4"
            }
          },
          {
            "category": "product_version",
            "name": "15.00.1497.045",
            "product": {
              "name": "Microsoft Exchange Server 2013 Cumulative Update 23 15.00.1497.045",
              "product_id": "11682"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Exchange Server 2013 Cumulative Update 23"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-21762",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "This vulnerability\u0027s attack is limited at the protocol level to a logically adjacent topology. This means it cannot simply be done across the internet, but instead needs something specific tied to the target. Good examples would include the same shared physical network (such as Bluetooth or IEEE 802.11), logical network (local IP subnet), or from within a secure or otherwise limited administrative domain (MPLS, secure VPN to an administrative network zone). This is common to many attacks that require machine-in-the-middle (MITM) type setups or that rely on initially gaining a foothold in another environment.",
          "title": "According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "If the attack is successful it could lead to a NTLM relay allowing for controls that would be able to block availability of a resource.",
          "title": "According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of availability (A:H)? What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "Yes, the attacker must be authenticated.",
          "title": "According to the CVSS metric, privileges required is low (PR:L). Does the attacker need to be in an authenticated role on the Exchange Server?"
        },
        {
          "category": "faq",
          "text": "Exploiting this vulnerability could allow the disclosure of NTLM hashes.",
          "title": "What type of information could be disclosed by this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "11682",
          "11957",
          "12038",
          "12039"
        ],
        "known_affected": [
          "1",
          "2",
          "3",
          "4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-21762 Microsoft Exchange Server Spoofing Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21762"
        },
        {
          "category": "self",
          "summary": "CVE-2023-21762 Microsoft Exchange Server Spoofing Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21762"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-01-10T08:00:00.000Z",
          "details": "15.01.2507.017:Security Update:https://support.microsoft.com/help/5022143",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/5022143"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-10T08:00:00.000Z",
          "details": "15.02.1118.021:Security Update:https://support.microsoft.com/help/5022193",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5022193"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-10T08:00:00.000Z",
          "details": "15.02.0986.037:Security Update:https://support.microsoft.com/help/5022193",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5022193"
        },
        {
          "category": "vendor_fix",
          "date": "2023-01-10T08:00:00.000Z",
          "details": "15.00.1497.045:Security Update:https://support.microsoft.com/help/5022188",
          "product_ids": [
            "4"
          ],
          "url": "https://support.microsoft.com/help/5022188"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Spoofing"
        },
        {
          "category": "exploit_status",
          "details": "Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Exchange Server Spoofing Vulnerability"
    }
  ]
}


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