Vulnerability Details CVE-2019-5440
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 59.5%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
Products affected by CVE-2019-5440
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cpe:2.3:a:revive-adserver:revive_adserver:-
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.0
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.1
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.2
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.3
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.4
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cpe:2.3:a:revive-adserver:revive_adserver:3.0.5
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cpe:2.3:a:revive-adserver:revive_adserver:3.1.0
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cpe:2.3:a:revive-adserver:revive_adserver:3.2.0
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cpe:2.3:a:revive-adserver:revive_adserver:3.2.1
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cpe:2.3:a:revive-adserver:revive_adserver:3.2.2
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cpe:2.3:a:revive-adserver:revive_adserver:3.2.3
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cpe:2.3:a:revive-adserver:revive_adserver:3.2.4
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cpe:2.3:a:revive-adserver:revive_adserver:4.0.0
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cpe:2.3:a:revive-adserver:revive_adserver:4.0.1
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cpe:2.3:a:revive-adserver:revive_adserver:4.0.2
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cpe:2.3:a:revive-adserver:revive_adserver:4.1.0
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cpe:2.3:a:revive-adserver:revive_adserver:4.1.1
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cpe:2.3:a:revive-adserver:revive_adserver:4.1.2
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cpe:2.3:a:revive-adserver:revive_adserver:4.1.3
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cpe:2.3:a:revive-adserver:revive_adserver:4.1.4
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cpe:2.3:a:revive-adserver:revive_adserver:4.2.0