CVE-2013-3522 in vBulletin
Summary
by MITRE
SQL injection vulnerability in index.php/ajax/api/reputation/vote in vBulletin 5.0.0 Beta 11, 5.0.0 Beta 28, and earlier allows remote authenticated users to execute arbitrary SQL commands via the nodeid parameter.
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Analysis
by VulDB Data Team • 12/31/2024
The vulnerability identified as CVE-2013-3522 represents a critical sql injection flaw within the vBulletin forum software ecosystem, specifically affecting versions 5.0.0 Beta 11 and 5.0.0 Beta 28 along with earlier releases. This vulnerability resides within the index.php/ajax/api/reputation/vote endpoint, which serves as a critical component for managing user reputation scores and voting mechanisms within the vBulletin platform. The flaw manifests when the application fails to properly sanitize user input passed through the nodeid parameter, creating an exploitable condition that allows malicious actors to manipulate the underlying database queries.
The technical nature of this vulnerability aligns with CWE-89, which categorizes sql injection as a weakness where untrusted data is incorporated into sql commands without proper validation or escaping mechanisms. Attackers can leverage this vulnerability by authenticating to the system with legitimate credentials and then manipulating the nodeid parameter to inject malicious sql payloads. The authentication requirement means that this vulnerability cannot be exploited by anonymous users, but it does represent a significant risk for organizations where privileged users might be compromised or where the application lacks proper access controls. The exploitation process typically involves crafting sql injection payloads that can bypass authentication checks, extract sensitive data, modify database records, or even escalate privileges within the system.
The operational impact of this vulnerability extends beyond simple data compromise, as it provides attackers with the capability to manipulate the core functionality of the vBulletin platform. Successful exploitation could result in unauthorized access to user accounts, modification of reputation scores, deletion of forum content, or even complete database corruption. The affected endpoint's role in the reputation system makes it particularly attractive to attackers who might seek to manipulate user rankings or gain unauthorized access to administrative functions. Organizations running these vulnerable versions face potential reputational damage, regulatory compliance issues, and increased risk of further compromise through lateral movement within their network infrastructure.
Mitigation strategies for CVE-2013-3522 should prioritize immediate patching of affected vBulletin installations to the latest stable releases that contain proper input validation and sanitization measures. Organizations should implement comprehensive web application firewalls to monitor and block suspicious sql injection patterns targeting the affected endpoint. Additionally, access controls should be reviewed to ensure that only authorized users can access the reputation voting functionality, and regular security audits should be conducted to identify similar vulnerabilities in other parts of the application. The vulnerability demonstrates the importance of proper parameter validation and input sanitization as outlined in the OWASP Top Ten security principles, specifically addressing the sql injection threat vector that continues to plague web applications across industries. Network segmentation and monitoring of unusual database access patterns can provide additional layers of defense against exploitation attempts.