{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-4818", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2023-09-07T13:18:09.776Z", "datePublished": "2024-01-15T13:28:53.084Z", "dateUpdated": "2024-01-15T13:28:53.084Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "A920", "vendor": "PAX Technology", "versions": [{"lessThan": "A920_AP_Boot_Release_V5.14", "status": "affected", "version": "0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Hubert Jasudowicz, Adam Kli\u015b and other members of STM Cyber R&D team"}], "datePublic": "2024-01-15T11:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<div><span style=\"background-color: rgba(221, 223, 228, 0.1);\">PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used.&nbsp;</span></div><div><span style=\"background-color: rgba(221, 223, 228, 0.1);\"><div><br></div>The attacker must have physical USB access to the device in order to exploit this vulnerability.</span></div>"}], "value": "PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used.\u00a0\n\n\n\n\nThe attacker must have physical USB access to the device in order to exploit this vulnerability.\n\n"}], "impacts": [{"capecId": "CAPEC-176", "descriptions": [{"lang": "en", "value": "CAPEC-176 Configuration/Environment Manipulation"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "CWE-20 Improper Input Validation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2024-01-15T13:28:53.084Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://ppn.paxengine.com/release/development"}, {"tags": ["technical-description"], "url": "https://blog.stmcyber.com/pax-pos-cves-2023/"}, {"tags": ["third-party-advisory"], "url": "https://cert.pl/en/posts/2024/01/CVE-2023-4818/"}, {"tags": ["third-party-advisory"], "url": "https://cert.pl/posts/2024/01/CVE-2023-4818/"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:paxtechnology:paydroid:7.1.2_aquarius_11.1.50_20230614:*:*:*:*:*:*:*", "matchCriteriaId": "034C08E1-1DEB-43D2-A38A-736E1FEDE45C", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:paxtechnology:a920:-:*:*:*:*:*:*:*", "matchCriteriaId": "D351F870-D43F-48B4-B2AC-0FDDD7B82ED4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used.\u00a0\n\n\n\n\nThe attacker must have physical USB access to the device in order to exploit this vulnerability.\n\n"}, {"lang": "es", "value": "El dispositivo PAX A920 permite degradar el gestor de arranque debido a un error en la verificaci\u00f3n de versi\u00f3n. La firma est\u00e1 correctamente comprobada y s\u00f3lo se puede utilizar el gestor de arranque firmado por PAX. El atacante debe tener acceso USB f\u00edsico al dispositivo para poder aprovechar esta vulnerabilidad."}], "id": "CVE-2023-4818", "lastModified": "2024-01-19T16:35:49.683", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-01-15T14:15:25.180", "references": [{"source": "cvd@cert.pl", "tags": ["Exploit", "Third Party Advisory"], "url": "https://blog.stmcyber.com/pax-pos-cves-2023/"}, {"source": "cvd@cert.pl", "tags": ["Third Party Advisory"], "url": "https://cert.pl/en/posts/2024/01/CVE-2023-4818/"}, {"source": "cvd@cert.pl", "tags": ["Third Party Advisory"], "url": "https://cert.pl/posts/2024/01/CVE-2023-4818/"}, {"source": "cvd@cert.pl", "tags": ["Permissions Required"], "url": "https://ppn.paxengine.com/release/development"}], "sourceIdentifier": "cvd@cert.pl", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "cvd@cert.pl", "type": "Secondary"}]}

{}