CVE-2017-17926 in Professional Service Script
Summary
by MITRE
PHP Scripts Mall Professional Service Script has a predicable registration URL, which makes it easier for remote attackers to register with an invalid or spoofed e-mail address.
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Analysis
by VulDB Data Team • 03/14/2020
The vulnerability identified as CVE-2017-17926 affects the PHP Scripts Mall Professional Service Script, a web application framework that facilitates business operations through online service management. This particular weakness stems from the predictable nature of the registration URL within the application's architecture, creating a significant security exposure that undermines the integrity of user account creation processes. The predictable URL structure allows malicious actors to systematically access registration endpoints without requiring legitimate user credentials or authorization, fundamentally compromising the application's access control mechanisms.
The technical flaw manifests through a lack of proper randomization or unpredictable token generation within the registration URL construction process. This vulnerability falls under the category of weak session management and predictable resource identification, aligning with CWE-200 (Information Exposure) and CWE-384 (Session Management Issues). Attackers can exploit this weakness by simply guessing or enumerating valid registration endpoints, enabling them to create accounts using fabricated email addresses or even legitimate addresses without proper authorization. The vulnerability essentially removes the security barrier that should normally prevent unauthorized registration attempts, creating a backdoor for malicious account creation.
The operational impact of this vulnerability extends beyond simple unauthorized registration, as it creates opportunities for various downstream attacks including spam account creation, data manipulation, and potential service abuse. Remote attackers can leverage the predictable URL to systematically register multiple accounts, potentially leading to account flooding, resource exhaustion, or even social engineering attacks where they can use the created accounts to gain additional access to system resources. The vulnerability also enables attackers to spoof email addresses, which can be used for phishing campaigns, spam distribution, or to bypass email-based verification systems that rely on legitimate address validation. This weakness directly violates the principle of least privilege and can undermine the overall security posture of the web application by providing unauthorized access to user registration functionality.
Mitigation strategies for this vulnerability require immediate implementation of unpredictable registration URL generation mechanisms that incorporate cryptographically secure randomization techniques. Organizations should implement proper token generation using secure random number generators and ensure that registration endpoints are not easily guessable or enumerable through automated means. The application should enforce rate limiting and account validation mechanisms to prevent abuse of the registration process, while also implementing proper input validation and email verification protocols to ensure legitimate user accounts. Security measures should include monitoring for unusual registration patterns and implementing CAPTCHA or similar anti-automation mechanisms to prevent automated exploitation. This vulnerability demonstrates the importance of proper URL design and access control implementation, aligning with ATT&CK technique T1078 (Valid Accounts) and T1566 (Phishing) where predictable endpoints can facilitate credential theft and account takeover scenarios.