CVE-2002-1719 in Bavo
Summary
by MITRE
Unknown vulnerability in Bavo 0.3 allows remote attackers to modify posted messages.
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Analysis
by VulDB Data Team • 09/02/2025
The vulnerability identified as CVE-2002-1719 affects Bavo 0.3, a web-based bulletin board system that was widely used in the early 2000s for online community discussions and message posting. This particular vulnerability represents a critical security flaw that undermines the integrity of user communications within the platform. The issue manifests as an authorization bypass mechanism that allows remote attackers to manipulate posted messages without proper authentication, fundamentally compromising the system's ability to maintain secure message handling and user accountability.
The technical flaw in Bavo 0.3 stems from inadequate input validation and insufficient access control mechanisms within the message modification functionality. Attackers can exploit this vulnerability by crafting specially formatted requests that circumvent the normal authorization checks typically required to edit or modify existing posts. This weakness likely resides in the application's handling of HTTP parameters or session management, where the system fails to properly verify user credentials or permissions before allowing message modification operations. The vulnerability's classification aligns with CWE-284, which addresses improper access control, and potentially CWE-20, which covers improper input validation, both of which are fundamental security principles that should be rigorously enforced in web applications.
The operational impact of CVE-2002-1719 extends beyond simple message manipulation to encompass significant risks for online communities and their users. Remote attackers can alter existing messages to spread misinformation, deface community content, or inject malicious links that compromise other users' security. This vulnerability particularly threatens the integrity of discussions and can be exploited to create false narratives or disrupt community dynamics. The ability to modify messages without authentication also raises concerns about data integrity and audit trail preservation, as legitimate users cannot verify the authenticity of posted content. From an attacker perspective, this vulnerability falls within the ATT&CK framework's privilege escalation and defense evasion categories, as it allows unauthorized modification of system content and can be used to maintain persistent access through content manipulation.
Mitigation strategies for this vulnerability should focus on implementing robust access control mechanisms and input validation procedures within the Bavo 0.3 system. Organizations should ensure that all message modification operations require proper authentication and authorization checks, with session tokens properly validated before any content changes are processed. The system should enforce strict parameter validation to prevent malicious input from being processed, and implement proper logging mechanisms to track all message modifications for security auditing purposes. Additionally, the application should be updated to the latest available version or patched according to vendor guidelines, as this vulnerability was likely addressed in subsequent releases. Security teams should also consider implementing network-level controls to monitor for suspicious modification attempts and establish clear incident response procedures for handling unauthorized content changes that may occur as a result of this vulnerability.