CVE-2008-1783 in Reviews
Summary
by MITRE
Prozilla Reviews 1.0 allows remote attackers to delete arbitrary users via a modified UserID parameter in a direct request to siteadmin/DeleteUser.php.
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Analysis
by VulDB Data Team • 10/20/2024
The vulnerability described in CVE-2008-1783 represents a critical access control flaw within Prozilla Reviews version 1.0 that enables remote attackers to perform unauthorized user account deletion operations. This issue stems from inadequate input validation and authentication checks within the administrative user management functionality of the web application. The vulnerability specifically affects the siteadmin/DeleteUser.php endpoint which processes user deletion requests without proper authorization verification, allowing malicious actors to manipulate the UserID parameter to target any user account within the system.
This vulnerability falls under the CWE-862 weakness category, which encompasses inadequate authorization scenarios where applications fail to properly verify that authenticated users have appropriate permissions to perform specific actions. The flaw demonstrates a classic privilege escalation vulnerability where an attacker can leverage a simple parameter modification to execute administrative functions beyond their intended scope. The attack vector is particularly dangerous as it requires no special privileges or credentials beyond the ability to make direct HTTP requests to the vulnerable endpoint, making it accessible to anyone who can reach the web application.
The operational impact of this vulnerability extends far beyond simple data loss, as unauthorized user deletion can compromise the integrity of the entire user management system and potentially lead to service disruption. When an attacker successfully exploits this vulnerability, they can remove legitimate users from the system, potentially including administrators or other critical accounts, which can result in denial of service for legitimate users and create opportunities for further attacks. The vulnerability also undermines trust in the application's security mechanisms and can lead to reputational damage for the organization operating the vulnerable system.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and authorization controls within the application's administrative interfaces. The most effective approach involves adding comprehensive access control checks that verify the authenticated user's permissions before processing any user deletion requests, ensuring that only authorized administrators can perform such operations. Additionally, implementing proper parameter sanitization and input validation mechanisms will prevent attackers from manipulating the UserID parameter to target unintended users. Organizations should also consider implementing rate limiting and logging mechanisms to detect and respond to suspicious deletion attempts, while following the principle of least privilege to minimize the potential impact of any successful exploitation attempts. The remediation process should include thorough code review of all administrative endpoints to identify similar authorization flaws and ensure that all user management functions properly validate both authentication status and authorization levels before executing sensitive operations.