{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Microsoft heeft een kwetsbaarheid verholpen in Exchange Server.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheid bevindt zich in de wijze waarop Exchange Server omgaat met P2 FROM headers die niet conform RFC zijn opgebouwd. Een kwaadwillende kan de kwetsbaarheid misbruiken om zich voor te doen als een andere gebruiker en uit naam van het slachtoffer e-mails te versturen.\n\nHoewel de server zelf weinig risico loopt op misbruik, kan een kwetsbare server misbruikt worden voor phishing-campagnes en andere malafide praktijken.\n\nAdditioneel aan deze update heeft Microsoft ook handelingsperspectieven gepubliceerd om deze kwetsbaarheid, en potentieel misbruik van misvormde P2 FROM headers, tegen te gaan.\n\nMicrosoft geeft aan signalen te hebben ontvangen dat informatie over deze kwetsbaarheid wordt gedeeld binnen diverse groepen.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Microsoft heeft updates beschikbaar gesteld waarmee de beschreven kwetsbaarheden worden verholpen. We raden u aan om deze updates te installeren. Meer informatie over de kwetsbaarheden, de installatie van de updates en eventuele work-arounds vindt u op:\n\nhttps://portal.msrc.microsoft.com/en-us/security-guidance",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Restriction of Names for Files and Other Resources",
        "title": "CWE-641"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "title": "Kwetsbaarheid verholpen in Microsoft Exchange Server",
    "tracking": {
      "current_release_date": "2024-11-12T18:56:25.729148Z",
      "id": "NCSC-2024-0438",
      "initial_release_date": "2024-11-12T18:56:25.729148Z",
      "revision_history": [
        {
          "date": "2024-11-12T18:56:25.729148Z",
          "number": "0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "exchange_server",
            "product": {
              "name": "exchange_server",
              "product_id": "CSAFPID-549033",
              "product_identification_helper": {
                "cpe": "cpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-49040",
      "cwe": {
        "id": "CWE-451",
        "name": "User Interface (UI) Misrepresentation of Critical Information"
      },
      "notes": [
        {
          "category": "other",
          "text": "User Interface (UI) Misrepresentation of Critical Information",
          "title": "CWE-451"
        }
      ],
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-49040",
          "url": "https://api.ncsc.nl/velma/v1/vulnerabilities/2024/CVE-2024-49040.json"
        }
      ],
      "title": "CVE-2024-49040"
    }
  ]
}