CVE-2017-15643

{"id": "CVE-2017-15643", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.6, "accessVector": "NETWORK", "vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "HIGH", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 4.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.4}]}, "published": "2017-10-19T22:29:00.183", "references": [{"url": "https://blogs.securiteam.com/index.php/archives/3485", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.ikarussecurity.com/about-ikarus/security-blog/vulnerability-in-windows-antivirus-products-ik-sa-2017-0001/", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-444"}]}], "descriptions": [{"lang": "en", "value": "An active network attacker (MiTM) can achieve remote code execution on a machine that runs IKARUS Anti Virus 2.16.7. IKARUS AV for Windows uses cleartext HTTP for updates along with a CRC32 checksum and an update value for verification of the downloaded files. The attacker first forces the client to initiate an update transaction by modifying an update field within an HTTP 200 response, so that it refers to a nonexistent update. The attacker then modifies the HTTP 404 response so that it specifies a successfully found update, with a Trojan horse executable file (e.g., guardxup.exe) and the correct CRC32 checksum for that file."}, {"lang": "es", "value": "Un atacante de red activo (Man in the Middle o MiTM) puede conseguir la ejecuci\u00f3n remota de c\u00f3digo en una m\u00e1quina que ejecute IKARUS Anti Virus, versi\u00f3n 2.16.7. IKARUS AV para Windows utiliza HTTP en texto no cifrado para actualizaciones, junto con una suma de comprobaci\u00f3n CRC32 y un valor de actualizaci\u00f3n para la verificaci\u00f3n de los archivos descargados. Primero, el atacante fuerza al cliente a iniciar una operaci\u00f3n de actualizaci\u00f3n modificando un campo de actualizaci\u00f3n en una respuesta HTTP 200, de forma que haga referencia a una actualizaci\u00f3n inexistente. Entonces, el atacante modifica la respuesta HTTP 400 para que especifique que se ha encontrado una actualizaci\u00f3n con \u00e9xito, con un archivo ejecutable troyano (ej.: guardxup.exe) y la suma de comprobaci\u00f3n CRC32 correcta para este archivo."}], "lastModified": "2017-11-14T18:56:07.923", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ikarussecurity:ikarus_antivirus:2.16.7:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "14789BE5-F4C5-463D-9335-058C2FBC341D"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}