CVE-2007-1432 in Blog
Summary
by MITRE
Grayscale Blog 0.8.0, and possibly earlier versions, allows remote attackers to gain privileges via direct requests with modified arguments in (1) the user_permissions parameter to add_users.php, and unspecified parameters to (2) addblog.php, (3) editblog.php, (4) editlinks.php, (5) edit_users.php, and (6) add_links.php.
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Analysis
by VulDB Data Team • 09/06/2025
The vulnerability identified as CVE-2007-1432 affects Grayscale Blog version 0.8.0 and potentially earlier releases, representing a critical privilege escalation flaw within the application's user management and administrative functions. This vulnerability stems from inadequate input validation and parameter handling mechanisms that fail to properly authenticate and authorize user requests before executing administrative operations. The flaw specifically manifests in multiple script files including add_users.php, addblog.php, editblog.php, editlinks.php, edit_users.php, and add_links.php, where direct manipulation of request parameters can lead to unauthorized privilege elevation. The vulnerability classifies under CWE-285, which addresses improper authorization issues in software systems, making it a significant concern for web application security.
The technical implementation of this vulnerability allows remote attackers to exploit the application's trust in user-supplied input by manipulating specific parameters in HTTP requests. When attackers submit modified user_permissions arguments to add_users.php, or manipulate unspecified parameters in the other affected scripts, the system processes these requests without proper validation of the attacker's authorization level. This creates a path for unauthenticated or low-privilege users to escalate their privileges and gain administrative access to the blogging platform. The flaw essentially bypasses the application's intended access control mechanisms, allowing attackers to perform actions typically restricted to administrators such as adding new users, modifying blog content, editing links, and managing user permissions.
The operational impact of CVE-2007-1432 extends beyond simple privilege escalation, as it fundamentally compromises the integrity and confidentiality of the affected blogging platform. Once an attacker successfully exploits this vulnerability, they can assume full administrative control over the blog system, potentially leading to data breaches, content manipulation, user account compromise, and the ability to install malicious code or backdoors. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet without requiring physical access to the system or knowledge of valid credentials. This makes the vulnerability particularly dangerous as it can be exploited by automated tools and bots, amplifying the potential for widespread compromise across multiple affected installations.
Mitigation strategies for CVE-2007-1432 should focus on implementing robust input validation and authorization checks across all administrative scripts within the Grayscale Blog application. The most effective immediate solution involves patching the application to version 0.8.1 or later, which contains the necessary security fixes. Organizations should also implement proper parameter sanitization and authentication mechanisms that validate user privileges before processing any administrative requests. Additionally, network-level protections such as web application firewalls and intrusion detection systems can help detect and prevent exploitation attempts. The vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation, and represents a classic example of how insufficient access control can lead to complete system compromise. Security administrators should also consider implementing regular security audits and vulnerability assessments to identify similar issues in other legacy applications that may be running in production environments.