CVE-2007-5988 in Bti-tracker
Summary
by MITRE
blocks/shoutbox_block.php in BtiTracker 1.4.4 does not verify user accounts, which allows remote attackers to post shoutbox entries as arbitrary users via a modified nick field.
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Analysis
by VulDB Data Team • 07/29/2021
The vulnerability identified as CVE-2007-5988 resides within the blocks/shoutbox_block.php component of BtiTracker version 1.4.4, representing a critical authentication and authorization flaw that undermines the system's user integrity mechanisms. This issue stems from the absence of proper user account verification within the shoutbox functionality, creating an exploitable condition that allows malicious actors to manipulate the system's user identification process. The flaw specifically targets the nick field parameter which is used to display user names in shoutbox entries, enabling attackers to submit messages with forged user identities. This vulnerability directly violates fundamental security principles of user authentication and access control, as it permits unauthorized individuals to impersonate legitimate users within the application's communication framework.
The technical exploitation of this vulnerability occurs through manipulation of the nick field parameter in the shoutbox submission process, where attackers can modify the user identification field to any desired value without proper authentication. This represents a classic case of insufficient input validation and authentication checks, as the system fails to verify whether the submitted nick corresponds to an actual registered user account. The flaw operates at the application layer and requires no elevated privileges to exploit, making it particularly dangerous as it can be leveraged by anyone with access to the application interface. According to CWE classification, this vulnerability maps to CWE-287 which addresses improper authentication mechanisms, while the ATT&CK framework would categorize this under privilege escalation and credential manipulation techniques.
The operational impact of this vulnerability extends beyond simple impersonation, as it can enable more sophisticated attacks including social engineering campaigns, misinformation dissemination, and potential privilege escalation attempts. Attackers can exploit this flaw to post malicious content, spread false information, or manipulate the perception of legitimate users within the system. The ability to post as arbitrary users undermines the trust model of the application and can lead to reputation damage, user confusion, and potential downstream security consequences. From a security perspective, this vulnerability creates a persistent threat vector that remains active as long as the vulnerable version of BtiTracker is deployed, since the flaw exists in the core application logic rather than being a temporary configuration issue.
Mitigation strategies for this vulnerability must focus on implementing proper authentication verification mechanisms within the shoutbox functionality, including validating user credentials before accepting nick field submissions and ensuring that only authenticated users can post entries. The recommended approach involves modifying the blocks/shoutbox_block.php file to include user session validation checks and proper account verification procedures before processing any shoutbox submissions. Organizations should also implement input sanitization measures to prevent parameter manipulation and establish proper access controls that enforce user identity integrity. Additionally, the system should log all shoutbox activities with proper user identification to enable forensic analysis and detection of unauthorized activities. This vulnerability underscores the importance of robust authentication mechanisms and input validation in web applications, particularly in community-driven systems where user-generated content can be leveraged for malicious purposes. The fix should be implemented through proper code review and security testing to ensure that similar authentication bypass vulnerabilities are not present in other components of the application.