CVE-2001-1334 in PHPSlash
Summary
by MITRE
Block_render_url.class in PHPSlash 0.6.1 allows remote attackers with PHPSlash administrator privileges to read arbitrary files by creating a block and specifying the target file as the source URL.
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Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2001-1334 resides within the PHPSlash content management system version 0.6.1, specifically within the block_render_url.class component. This flaw represents a classic path traversal or arbitrary file inclusion vulnerability that can be exploited by attackers who have already compromised administrator credentials. The vulnerability stems from insufficient input validation and sanitization mechanisms within the block creation functionality, which fails to properly validate or sanitize the source URL parameter before processing it. When an administrator creates a block and specifies a target file as the source URL, the system does not adequately verify the legitimacy of the file path, allowing malicious actors to specify arbitrary file locations within the system's file structure.
The technical implementation of this vulnerability involves the improper handling of user-supplied input within the block rendering process. When the system processes the source URL parameter, it directly incorporates this value into file operations without sufficient sanitization or validation checks. This creates a condition where an attacker with administrative access can manipulate the block creation interface to reference files outside the intended scope, potentially including sensitive system files, configuration data, or other restricted resources. The vulnerability is classified under CWE-22 as "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", which is a well-documented weakness in web applications that fail to properly validate file paths.
From an operational impact perspective, this vulnerability significantly compromises the security posture of systems running PHPSlash 0.6.1. An attacker who has obtained administrator credentials can leverage this flaw to gain unauthorized access to sensitive files that should remain protected. This includes potential exposure of database connection details, user credentials stored in configuration files, system logs, or other administrative resources that could further facilitate additional attacks. The vulnerability essentially allows for privilege escalation within the application's file system boundaries, enabling attackers to extract information that could be used for lateral movement or to compromise other systems within the network infrastructure. The ATT&CK framework categorizes this as a privilege escalation technique through access to sensitive files, potentially enabling further stages of an attack such as credential harvesting or system reconnaissance.
The mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization mechanisms within the block rendering functionality. Organizations should ensure that all user-supplied input, particularly file paths and URLs, undergo rigorous validation before being processed by the system. This includes implementing strict whitelisting of acceptable file paths, using absolute path resolution to prevent directory traversal attacks, and ensuring that the application operates with minimal necessary privileges. Additionally, administrators should be educated about the risks associated with allowing arbitrary file references within web applications and should implement proper access controls to limit the scope of files that can be referenced through the block creation interface. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application. The vulnerability also highlights the importance of following secure coding practices and implementing defense-in-depth strategies to protect against similar flaws that could exist in other parts of the system architecture.