CVE-2002-0111 in Dinos Webserver
Summary
by MITRE
Directory traversal vulnerability in Funsoft Dino s Webserver 1.2 and earlier allows remote attackers to read files or execute arbitrary commands via a .. (dot dot) in the URL.
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Analysis
by VulDB Data Team • 06/03/2019
The directory traversal vulnerability identified as CVE-2002-0111 represents a critical security flaw in Funsoft Dino Webserver version 1.2 and earlier implementations. This vulnerability stems from inadequate input validation mechanisms within the web server's URL processing logic, allowing malicious actors to exploit path traversal techniques through specially crafted URL requests containing dot-dot sequences. The flaw specifically affects how the server handles relative path references in Uniform Resource Locators, creating an opportunity for unauthorized access to sensitive system resources.
The technical exploitation of this vulnerability occurs when a remote attacker crafts a URL containing .. (dot dot) sequences that manipulate the web server's file resolution mechanism. When the server processes such requests, it fails to properly sanitize or validate the path components, allowing the traversal beyond the intended document root directory. This weakness enables attackers to navigate the file system hierarchy and access files that should remain protected, including configuration files, system binaries, and sensitive user data. The vulnerability operates at the application layer and can potentially escalate to arbitrary code execution depending on the server's configuration and the files accessed through the traversal.
From an operational impact perspective, this vulnerability presents significant risks to web server security and data integrity. Attackers can leverage this flaw to gain unauthorized access to sensitive information such as password files, database credentials, application source code, and system configuration details. The potential for arbitrary command execution through file access means that successful exploitation could lead to complete system compromise, allowing attackers to establish persistent access, escalate privileges, or deploy additional malware. Organizations running vulnerable versions of Funsoft Dino Webserver face exposure to data breaches, system infiltration, and potential regulatory compliance violations.
Security professionals should implement multiple layers of mitigation strategies to address this vulnerability. The primary remediation involves upgrading to a patched version of Funsoft Dino Webserver that properly validates and sanitizes URL path components. Additionally, implementing proper input validation mechanisms, restricting file access permissions, and deploying web application firewalls can provide defensive measures against exploitation attempts. The vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, and maps to ATT&CK technique T1059 for command and scripting interpreter usage. Organizations should also consider implementing network segmentation, monitoring for suspicious URL patterns, and conducting regular security assessments to identify and remediate similar path traversal vulnerabilities across their infrastructure.