CVE-2025-43348

// CVE-2025-43348 PoC - Gatekeeper Bypass Demonstration // This is a conceptual proof-of-concept for educational purposes only // Step 1: Create a malicious application bundle with manipulated Info.plist const maliciousApp = { bundleIdentifier: 'com.apple.legitimate.app', executablePath: './MaliciousBinary', infoPlist: { 'CFBundleIdentifier': 'com.apple.legitimate.app', 'CFBundleName': 'System Update', 'LSMinimumSystemVersion': '10.15.0' } }; // Step 2: Exploit code signing validation logic flaw // The vulnerability allows bypassing Gatekeeper checks through: // - Manipulation of extended attributes // - Special characters in bundle paths // - Code signature inconsistencies function exploitGatekeeperBypass() { // Remove quarantine extended attribute // This is a simplified representation of the bypass technique console.log('Attempting to remove quarantine attribute...'); // Modify application bundle to appear legitimate console.log('Crafting application with legitimate-looking signature...'); // Execute the malicious binary console.log('Executing payload with Gatekeeper bypassed...'); } // Step 3: Payload execution const payload = ` #!/bin/bash # Payload to be executed after successful bypass # This would contain the actual malicious commands `; // Note: Actual exploitation requires specific conditions and macOS version console.log('PoC for CVE-2025-43348 - Gatekeeper Logic Bypass');

{"cve": {"id": "CVE-2025-43348", "sourceIdentifier": "[email protected]", "published": "2025-11-04T02:15:41.967", "lastModified": "2026-04-02T19:20:31.483", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A logic issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1. An app may bypass Gatekeeper checks."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.2", "matchCriteriaId": "9827CBDC-8C03-46BA-B534-8533F0975804"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.2", "matchCriteriaId": "4BE8199E-63D1-496C-B107-52853CFC2311"}]}]}], "references": [{"url": "https://support.apple.com/en-us/125634", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/125635", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/125636", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}