CVE-2001-0306 in WEBactive
Summary
by MITRE
Directory traversal vulnerability in ITAfrica WEBactive HTTP Server 1.00 allows remote attackers to read arbitrary files via a .. (dot dot) in a URL.
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Analysis
by VulDB Data Team • 03/16/2025
The vulnerability identified as CVE-2001-0306 represents a critical directory traversal flaw within the ITAfrica WEBactive HTTP Server version 1.00, classified under CWE-22 - Improper Limitation of a Pathname to a Restricted Directory. This weakness enables malicious actors to bypass normal access controls and retrieve arbitrary files from the server's file system by exploiting improperly validated input in URL parameters. The vulnerability specifically manifests when the web server fails to adequately sanitize or validate directory path components, allowing attackers to manipulate URL requests containing double dot sequences that traverse upward through the directory structure. This type of vulnerability directly undermines the principle of least privilege and can lead to unauthorized access to sensitive system files, configuration data, and potentially user information stored on the affected server.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing .. (dot dot) sequences that are not properly filtered or sanitized by the web server. The ITAfrica WEBactive HTTP Server 1.00 fails to implement proper input validation mechanisms that would prevent such path traversal attempts, allowing the server to interpret the .. sequences as legitimate directory navigation commands. When processing a request with a crafted path traversal payload, the server resolves the directory navigation and serves the requested files without proper authorization checks. This behavior aligns with the ATT&CK technique T1083 - File and Directory Discovery, which describes methods adversaries use to enumerate files and directories on compromised systems. The vulnerability essentially allows attackers to perform unauthorized file system access operations that should be restricted to authorized users or system processes.
The operational impact of CVE-2001-0306 extends beyond simple unauthorized file access, potentially exposing critical system information that could aid in further exploitation attempts. Attackers may leverage this vulnerability to access configuration files containing database credentials, application secrets, or system administration details that could facilitate privilege escalation or lateral movement within the network. The vulnerability's remote nature means that attackers do not require physical access or local system credentials to exploit it, making it particularly dangerous for publicly accessible web servers. Organizations running the affected ITAfrica WEBactive HTTP Server 1.00 version face significant risk of data breaches, system compromise, and potential regulatory violations if sensitive information is exposed through this vulnerability. The impact is further amplified by the fact that this vulnerability existed in a widely deployed web server solution, potentially affecting numerous systems across different organizations.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures to prevent directory traversal attacks. System administrators should apply the vendor-provided security patches or upgrade to a newer version of the ITAfrica WEBactive HTTP Server that addresses this weakness. The implementation of proper path validation mechanisms, including the use of allowlists for acceptable file paths and the rejection of any input containing .. sequences, should be enforced at the application level. Network segmentation and firewall rules can provide additional defense-in-depth measures to limit access to critical systems. Security monitoring should include detection of suspicious URL patterns containing directory traversal sequences, which aligns with ATT&CK technique T1119 - Automated Collection. Organizations should also consider implementing web application firewalls that can detect and block known directory traversal attack patterns, providing an additional layer of protection against this specific vulnerability class while adhering to security best practices outlined in the OWASP Top Ten and similar industry standards for web application security.