CVE-2006-2014 in Sl Site
Summary
by MITRE
Directory traversal vulnerability in gallerie.php in SL_site 1.0 allows remote attackers to list images in arbitrary directories via ".." sequences in the rep parameter, which is used to construct a directory name in admin/config.inc.php. NOTE: this issue could be used to produce resultant XSS from an error message.
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Analysis
by VulDB Data Team • 09/07/2017
The vulnerability identified as CVE-2006-2014 represents a critical directory traversal flaw within the SL_site 1.0 web application framework, specifically affecting the gallerie.php component. This vulnerability resides in the manner in which user-supplied input is processed and utilized to construct directory paths within the application's administrative configuration file. The flaw manifests when the rep parameter, which is intended to specify a repository directory, is manipulated using directory traversal sequences such as ".." to navigate outside the intended directory structure. The vulnerability is classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. This weakness enables attackers to access files and directories that should normally be restricted, potentially exposing sensitive information or system resources.
The technical exploitation of this vulnerability occurs through the manipulation of the rep parameter in the gallerie.php script, where the input is directly incorporated into the directory name construction process within admin/config.inc.php. When attackers submit malicious input containing sequences like "../" or similar traversal patterns, the application fails to properly sanitize or validate this input before using it to construct file paths. This inadequate input validation creates a scenario where the application's directory traversal mechanism can be abused to access arbitrary directories on the server filesystem. The vulnerability's impact extends beyond simple directory listing, as the error messages generated during failed directory access attempts can contain reflected content that enables cross-site scripting attacks, making this a multi-vector threat that combines path traversal with XSS capabilities.
The operational consequences of this vulnerability are significant for organizations utilizing SL_site 1.0, as it provides attackers with the ability to enumerate and potentially access sensitive files stored outside the intended web root directory. This could lead to exposure of configuration files, database credentials, source code, or other sensitive system information. The additional XSS vector through error messages increases the attack surface considerably, as successful exploitation could result in session hijacking, defacement of web content, or redirection to malicious sites. From an attacker's perspective, this vulnerability aligns with ATT&CK technique T1083, which covers directory traversal and path traversal attacks, and T1190, which addresses exploitation of vulnerabilities in web applications. The vulnerability demonstrates poor input validation practices and inadequate access controls, representing fundamental security flaws in the application's architecture that violate security best practices established in frameworks such as OWASP Top Ten.
Mitigation strategies for this vulnerability must address both the directory traversal and XSS components of the flaw. The primary remediation involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file path construction. Applications should employ whitelisting approaches for directory access, where only predefined, safe directories are allowed for access, rather than relying on user input to construct paths. Additionally, the application should implement proper access controls and ensure that directory traversal attempts are properly rejected or sanitized before being processed. Error handling should be improved to prevent the reflection of user input in error messages, thereby eliminating the XSS vector. Organizations should also consider implementing web application firewalls and input validation rules that can detect and block suspicious traversal sequences. The vulnerability highlights the importance of secure coding practices and proper parameter validation, as outlined in security standards such as those defined by the Open Web Application Security Project and the Center for Internet Security. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application stack.