{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Emanuel Pichler with University of Technology Graz"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Low"
    },
    "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-2024-21383 Microsoft Edge (Chromium-based) Spoofing Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21383"
      },
      {
        "category": "self",
        "summary": "CVE-2024-21383 Microsoft Edge (Chromium-based) Spoofing Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21383.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 Edge (Chromium-based) Spoofing Vulnerability",
    "tracking": {
      "current_release_date": "2024-01-25T08:00:00.000Z",
      "generator": {
        "date": "2025-05-03T01:46:23.026Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2024-21383",
      "initial_release_date": "2024-01-09T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-01-25T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c121.0.2277.83",
            "product": {
              "name": "Microsoft Edge (Chromium-based) \u003c121.0.2277.83",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "121.0.2277.83",
            "product": {
              "name": "Microsoft Edge (Chromium-based) 121.0.2277.83",
              "product_id": "11655"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft Edge (Chromium-based)"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-21383",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Stable: Stable, 121.0.2277.83: 121.0.2277.83, 1/25/2024: 1/25/2024, 121.0.6167.85/.86: 121.0.6167.85/.86, Extended Stable: Extended Stable, 120.0.2210.160: 120.0.2210.160, 1/25/2024: 1/25/2024, 120.0.6099.268: 120.0.6099.268",
          "title": "What is the version information for this release?"
        },
        {
          "category": "faq",
          "text": "An attacker must send the user a malicious file and convince them to open it.",
          "title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?"
        },
        {
          "category": "faq",
          "text": "An attacker could spoof the PDF signature stamp by tricking the user with a forgery when they open a digitally signed PDF and view the visual signature stamp.",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to no loss of confidentiality (C:N), some loss of integrity (I:L) but have no effect on availability (A:N). How could an attacker impact the PDF File Signature?"
        }
      ],
      "product_status": {
        "fixed": [
          "11655"
        ],
        "known_affected": [
          "1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-21383 Microsoft Edge (Chromium-based) Spoofing Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21383"
        },
        {
          "category": "self",
          "summary": "CVE-2024-21383 Microsoft Edge (Chromium-based) Spoofing Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21383.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-01-25T08:00:00.000Z",
          "details": "121.0.2277.83:Security Update:https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security",
          "product_ids": [
            "1"
          ],
          "url": "https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 2.9,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Spoofing"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft Edge (Chromium-based) Spoofing Vulnerability"
    }
  ]
}