CVE-2008-7241 in PunBB
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in PunBB before 1.2.17 allows remote attackers to hijack the authentication of unspecified users for requests related to a logout, probably a forced logout.
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Analysis
by VulDB Data Team • 01/20/2019
The CVE-2008-7241 vulnerability represents a critical cross-site request forgery flaw discovered in PunBB forums prior to version 1.2.17. This vulnerability operates at the application layer and specifically targets the forum's authentication mechanisms, creating a dangerous attack vector that could allow remote adversaries to manipulate user sessions without requiring authentication credentials. The flaw manifests when the application fails to properly validate request origins, enabling attackers to craft malicious requests that appear to originate from legitimate users within the forum environment.
This CSRF vulnerability specifically affects logout-related functionality, though the implications extend beyond simple session termination. The vulnerability stems from the application's insufficient implementation of anti-CSRF tokens or origin validation mechanisms within its session management processes. Attackers can exploit this weakness by tricking users into visiting malicious websites or clicking on compromised links that automatically submit logout requests on behalf of authenticated users. The forced logout capability, while seemingly benign, provides attackers with an opportunity to disrupt user sessions and potentially gain unauthorized access to accounts through session manipulation techniques.
From an operational perspective, this vulnerability creates significant risk for forum administrators and their user communities. The attack surface is particularly concerning because it targets the fundamental authentication and session management components of the forum software. When exploited, the vulnerability can result in unauthorized account access, session hijacking, and potential data compromise. The impact extends to user trust and platform integrity, as users may experience unexpected logout events or find their accounts compromised without proper authorization. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses in web applications, and demonstrates how insufficient input validation and token management can create persistent security risks.
The exploitation of this CSRF vulnerability follows established attack patterns documented in the MITRE ATT&CK framework under the technique of credential access and session management manipulation. Attackers typically leverage social engineering tactics to deliver malicious payloads that exploit the lack of proper CSRF protection, often through phishing campaigns or compromised third-party websites. The remediation process involves implementing proper anti-CSRF token mechanisms, validating request origins, and ensuring that all state-changing operations require explicit user confirmation and validation tokens. Organizations should prioritize updating to PunBB version 1.2.17 or later, as this release includes the necessary patches to address the CSRF implementation gaps. Additionally, security teams should conduct thorough reviews of session management protocols and implement comprehensive input validation to prevent similar vulnerabilities from emerging in other components of their web applications.