CVE-2003-1162 in Bulletin Board
Summary
by MITRE
index.php in Tritanium Bulletin Board 1.2.3 allows remote attackers to read and reply to arbitrary messages by modifying the thread_id, forum_id, and sid parameters.
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Analysis
by VulDB Data Team • 01/17/2025
The vulnerability identified as CVE-2003-1162 resides within the Tritanium Bulletin Board version 1.2.3 software, specifically in the index.php script that governs message board operations. This represents a critical access control flaw that undermines the fundamental security model of the bulletin board system. The vulnerability manifests through improper input validation and parameter handling mechanisms that fail to authenticate or authorize user access to message threads and forums. Attackers can exploit this weakness by manipulating three key parameters: thread_id, forum_id, and sid, which are typically used to identify specific discussions and user sessions within the application. The flaw essentially allows unauthorized users to bypass normal access restrictions and gain visibility into messages they should not be able to view or interact with.
This vulnerability directly maps to CWE-285, which describes improper authorization issues in software systems, and aligns with ATT&CK technique T1078 for valid accounts and T1566 for spearphishing with a payload. The technical implementation flaw occurs at the application layer where user-supplied parameters are not properly sanitized or validated before being processed. The software fails to implement proper session management and access control checks, allowing attackers to construct malicious URLs or HTTP requests that contain modified parameter values. When these modified parameters are processed by the vulnerable index.php script, the system incorrectly grants access to threads and forums that are normally restricted to specific user groups or authenticated participants.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential data integrity compromise and unauthorized communication within the bulletin board environment. Remote attackers can not only read arbitrary messages but also reply to threads they should not have access to, potentially leading to the injection of malicious content or misinformation within the system. This capability undermines the trust model of the bulletin board and could enable attackers to disrupt normal operations, conduct social engineering attacks, or gather sensitive information from restricted discussions. The vulnerability affects the confidentiality, integrity, and availability of the bulletin board system, as unauthorized users can both access protected content and modify the conversation threads.
Mitigation strategies for this vulnerability should focus on implementing robust input validation, proper access control mechanisms, and session management protocols. The primary fix involves modifying the index.php script to validate all incoming parameters against legitimate user permissions and session identifiers before processing any requests. This includes implementing proper authentication checks for each thread and forum access attempt, ensuring that session identifiers (sid) are properly validated and that thread_id and forum_id parameters are verified against the user's authorization level. Organizations should also implement proper logging mechanisms to detect and alert on suspicious parameter modifications and consider implementing rate limiting to prevent automated exploitation attempts. The solution must address the root cause by enforcing proper authorization checks at the application level, as outlined in the CWE-285 guidance for preventing improper access control implementations.