CVE-2006-2901 in DWL-2100ap
Summary
by MITRE
The web server for D-Link Wireless Access-Point (DWL-2100ap) firmware 2.10na and earlier allows remote attackers to obtain sensitive system information via a request to an arbitrary .cfg file, which returns configuration information including passwords.
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Analysis
by VulDB Data Team • 06/21/2025
The vulnerability identified as CVE-2006-2901 affects the D-Link Wireless Access-Point model DWL-2100ap running firmware versions 2.10na and earlier. This represents a critical information disclosure flaw that exposes sensitive system configuration data to remote attackers without authentication. The vulnerability stems from improper access controls within the web server implementation of the device's firmware, allowing unauthorized users to retrieve configuration files through simple HTTP requests. The affected .cfg files contain critical system information including administrative credentials, network configuration parameters, and potentially other sensitive operational data that could be exploited for further compromise.
This vulnerability directly maps to CWE-200, which describes "Information Exposure" in software systems, specifically encompassing cases where sensitive information is accessible to unauthorized parties. The flaw demonstrates poor input validation and access control mechanisms within the web server component, as legitimate users should not be able to retrieve configuration files through arbitrary requests. The security implications extend beyond simple credential exposure, as these configuration files often contain network topology information, device identifiers, and other operational details that could facilitate more sophisticated attacks. The vulnerability is particularly concerning because it requires no authentication or specialized tools to exploit, making it accessible to any remote attacker with basic network connectivity to the device.
The operational impact of this vulnerability is severe and multifaceted across multiple attack vectors. Remote attackers can leverage this flaw to gain unauthorized access to the wireless access point, potentially leading to complete network compromise through lateral movement. The exposure of administrative passwords enables attackers to modify device configurations, disable security features, or redirect traffic through the compromised access point. According to ATT&CK framework, this vulnerability aligns with T1083 (File and Directory Discovery) and T1566 (Phishing for Information) as attackers can systematically enumerate sensitive files and extract credentials for further exploitation. Network reconnaissance activities become significantly easier when attackers can obtain device configurations, as they gain insight into network topology and security posture.
Mitigation strategies for this vulnerability should include immediate firmware updates to versions that address the information disclosure flaw, as D-Link has likely released patches to resolve this issue. Network segmentation and firewall rules should be implemented to restrict access to the wireless access point to authorized network segments only. Additionally, administrative credentials should be changed immediately if the device has been compromised, and network monitoring should be enhanced to detect unusual access patterns to configuration files. Security audits should include verification of device firmware versions and configuration file access controls to prevent similar vulnerabilities from being present in other network infrastructure components. Organizations should also implement regular vulnerability assessments and penetration testing to identify and remediate similar access control flaws in other network devices that may be running outdated firmware versions.