CVE-2007-4047 in geoBlog
Summary
by MITRE
geoBlog (aka BitDamaged) 1 does not require authentication for (1) deletecomment.php, (2) deleteblog.php, and (3) listcomment.php in admin/, which allows remote attackers to delete arbitrary comments, delete arbitrary blogs, and have other unspecified impact via a request with a valid id parameter.
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Analysis
by VulDB Data Team • 09/04/2025
The vulnerability identified as CVE-2007-4047 affects geoBlog version 1, also known as BitDamaged, and represents a critical authentication bypass flaw that compromises the security of the administrative functions within the application. This issue stems from the application's failure to properly validate user credentials before permitting access to sensitive administrative endpoints, creating a pathway for unauthorized actors to execute destructive operations without proper authorization. The vulnerability specifically impacts three key administrative scripts located within the admin/ directory of the application.
The technical flaw manifests through three distinct vulnerable endpoints: deletecomment.php, deleteblog.php, and listcomment.php. These scripts are designed to handle administrative tasks related to comment management and blog deletion, yet they fail to implement any form of authentication verification. Attackers can exploit this weakness by crafting HTTP requests that target these endpoints with valid id parameters, effectively bypassing the intended access controls. This authentication bypass vulnerability falls under the CWE-287 category of Improper Authentication, specifically addressing the absence of proper access control mechanisms for administrative functions. The vulnerability enables attackers to perform operations that should only be accessible to authenticated administrators, fundamentally undermining the application's security model.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with the capability to delete arbitrary comments and blogs from the system. This destructive potential extends beyond simple data removal, as it can result in complete loss of user-generated content, disruption of service availability, and potential compromise of the entire application's integrity. The unspecified impact mentioned in the description suggests that the vulnerability may enable additional attack vectors beyond the immediate deletion capabilities, potentially allowing for further exploitation or privilege escalation within the application. From an operational security perspective, this vulnerability creates an immediate risk of data loss and service disruption that can significantly impact both the application's functionality and user trust.
The security implications of CVE-2007-4047 align with several ATT&CK framework techniques, particularly those related to privilege escalation and credential access. The vulnerability enables an attacker to perform administrative functions without proper authentication, which maps to techniques involving unauthorized access to administrative interfaces. The lack of proper access control mechanisms also relates to credential stuffing and unauthorized access patterns that attackers commonly exploit in web applications. Organizations should consider this vulnerability as part of a broader security assessment that includes reviewing all administrative endpoints for proper authentication requirements and implementing robust access control measures. The vulnerability demonstrates the critical importance of applying the principle of least privilege and ensuring that all administrative functions require proper authentication before execution.
Mitigation strategies for this vulnerability should focus on implementing proper authentication checks for all administrative endpoints, including the three identified scripts. The most effective approach involves modifying the application code to require valid user authentication before allowing access to deletecomment.php, deleteblog.php, and listcomment.php. This can be achieved through session validation, API key verification, or other established authentication mechanisms. Organizations should also implement proper input validation and parameter sanitization to prevent exploitation of the id parameter. Additionally, the application should enforce role-based access controls to ensure that only authorized administrators can access these functions. Security monitoring should be implemented to detect and alert on unauthorized access attempts to administrative endpoints, providing visibility into potential exploitation attempts and supporting incident response efforts. The vulnerability highlights the necessity of comprehensive security testing including penetration testing and code reviews to identify authentication bypass flaws before they can be exploited by malicious actors.