CVE-2003-1424 in Petitforum
Summary
by MITRE
message.php in Petitforum does not properly authenticate users, which allows remote attackers to impersonate forum users via a modified connect cookie.
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Analysis
by VulDB Data Team • 07/04/2017
The vulnerability identified as CVE-2003-1424 resides within the message.php script of Petitforum, a web-based discussion forum application. This authentication flaw represents a critical security weakness that fundamentally undermines the integrity of user sessions and access controls. The vulnerability stems from insufficient validation of user credentials within the application's session management mechanism, creating an exploitable condition that allows unauthorized individuals to gain elevated privileges without proper authorization.
The technical implementation of this vulnerability involves the manipulation of the connect cookie parameter that is used to maintain user authentication state within the forum application. When users log into Petitforum, the system typically generates a connect cookie containing session information that authenticates the user for subsequent requests. However, the message.php script fails to properly validate the authenticity and integrity of this cookie before granting access to protected forum functionality. Attackers can exploit this by crafting a modified connect cookie that appears legitimate to the application, thereby bypassing the normal authentication process and impersonating existing forum users.
This authentication bypass vulnerability operates under the broader category of weak session management and improper authentication controls, aligning with CWE-287 which addresses improper authentication vulnerabilities. The operational impact of this flaw extends beyond simple unauthorized access to encompass potential data manipulation, message posting as other users, private message interception, and overall forum compromise. An attacker who successfully exploits this vulnerability can effectively assume the identity of any forum user, potentially gaining access to private communications, user profiles, and other sensitive information stored within the forum environment.
The attack surface for this vulnerability is particularly concerning given that it allows remote exploitation without requiring any local system access or specialized tools beyond basic web browsing capabilities. This remote attack vector means that malicious actors can exploit the vulnerability from anywhere on the internet, making it particularly dangerous for publicly accessible forum installations. The implications for forum administrators and users are significant, as compromised sessions can lead to reputation damage, data breaches, and potential legal consequences for organizations hosting vulnerable forum applications.
Mitigation strategies for this vulnerability should focus on implementing robust session management practices and proper authentication validation. The primary remediation involves strengthening the connect cookie validation logic within the message.php script to ensure that all session tokens are properly authenticated before granting access to forum resources. This includes implementing cryptographic integrity checks on session cookies, enforcing strict session expiration policies, and ensuring that session identifiers are randomly generated and sufficiently long to prevent predictable patterns. Organizations should also consider implementing additional security controls such as secure cookie flags, HTTP-only headers, and regular security audits of their web applications to prevent similar authentication bypass vulnerabilities from occurring in other components of their software infrastructure. The vulnerability demonstrates the critical importance of proper input validation and authentication mechanisms in web applications, aligning with ATT&CK technique T1566 which covers credential access through exploitation of authentication mechanisms.