PT-2019-17670 · Revive Adserver · Revive Adserver

Paulos · Published 2019-05-28 · Updated 2019-10-09 · CVE-2019-5440

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Revive Adserver versions prior to 4.2.1

Description The issue is related to the use of a cryptographically weak PRNG in the password recovery token generation. This could potentially lead to an authentication bypass attack if the password recovery functionality is exploited. The generateRecoveryId() function in lib/OA/Dal/PasswordRecovery.php generates a password reset token based on the PHP uniqid function, which relies on the current server time. This time is often visible in an HTTP Date header.

Recommendations For versions prior to 4.2.1, update to version 4.2.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the password recovery functionality until a patch is available. Avoid using the password recovery feature in the affected versions until the issue is resolved.

Exploit

Fix

Weakness Enumeration

CWE-338

Related Identifiers

CVE-2019-5440

Affected Products

Revive Adserver

References · 3

• 🔥 https://hackerone.com/reports/576504 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-5440 · Security Note
• https://osv.dev/vulnerability/CVE-2019-5440 · Vendor Advisory