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In lib/OA/Dal/PasswordRecovery.php, the function generateRecoveryId() generates a password reset token that relies on the PHP uniqid function and consequently depends only on the current server time, which is often visible in an HTTP Date header."}]}},"nvd":{"publishedDate":"2019-05-28 19:29:00","lastModifiedDate":"2019-10-09 23:50:00","problem_types":["CWE-338"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:*","versionEndExcluding":"4.2.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2019","CveId":"5440","Ordinal":"143060","Title":"CVE-2019-5440","CVE":"CVE-2019-5440","Year":"2019"},"notes":[{"CveYear":"2019","CveId":"5440","Ordinal":"1","NoteData":"Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bypass attack if an attacker exploits the password recovery functionality. In lib/OA/Dal/PasswordRecovery.php, the function generateRecoveryId() generates a password reset token that relies on the PHP uniqid function and consequently depends only on the current server time, which is often visible in an HTTP Date header.","Type":"Description","Title":null},{"CveYear":"2019","CveId":"5440","Ordinal":"2","NoteData":"2019-05-28","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"5440","Ordinal":"3","NoteData":"2019-05-30","Type":"Other","Title":"Modified"}]}}}