CVE-2007-2727

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"cveTags": [], "descriptions": [{"lang": "en", "value": "The mcrypt_create_iv function in ext/mcrypt/mcrypt.c in PHP before 4.4.7, 5.2.1, and possibly 5.0.x and other PHP 5 versions, calls php_rand_r with an uninitialized seed variable and therefore always generates the same initialization vector (IV), which might allow context-dependent attackers to decrypt certain data more easily because of the guessable encryption keys."}, {"lang": "es", "value": "La funci\u00f3n mcrypt_create_iv en ext/mcrypt/mcrypt.c en PHP anterior a 4.4.7, 5.2.1, y posiblemente 5.0.x y otras versiones PHP 5, llaman a php_rand_r con una variable de cabeza de serie no inicializada y por lo tanto siempre genera el mismo vector de inicializaci\u00f3n (IV), lo cual podr\u00eda permitir a atacantes dependientes del contexto desencriptar ciertos datos m\u00e1s f\u00e1cilmente debido a que las claves de cifrado son m\u00e1s f\u00e1ciles de adivinar."}], "id": "CVE-2007-2727", "lastModified": "2026-06-16T22:40:11.910", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2007-05-16T22:30:00.000", "references": [{"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://blog.php-security.org/archives/80-Watching-the-PHP-CVS.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://bugs.php.net/bug.php?id=40999"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": 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This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5, or Red Hat\nApplication Stack 1, or 2, as the packages shipped are not compiled with the mcrypt extension affected by this issue.\n", "lastModified": "2008-06-26T00:00:00", "organization": "Red Hat"}], "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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