D-Link DWL-2600AP devices running firmware version 4.2.0.15 Rev A are impacted by a high-severity vulnerability that allows authenticated OS command injection through the Save Configuration functionality in the web interface. This flaw permits attackers to use shell metacharacters in specific parameters, leading to potential unauthorized command execution. With a CVSS score of 7.8, this vulnerability poses significant risks that demand immediate attention from organizations using affected devices.
The risk to organizations includes potential data breaches, unauthorized access, and loss of integrity within network operations. Given the nature of the attack vector, which is local with low complexity, attackers with minimal privileges can exploit this vulnerability without user interaction. Therefore, it is imperative for organizations to assess their exposure and apply necessary patches to mitigate the risks.
As of June 29, 2023, this vulnerability has been added to the Known Exploited Vulnerabilities (KEV) catalog, indicating that it is actively being exploited in the wild. Organizations should prioritize patching immediately to safeguard their networks from potential threats associated with this vulnerability.
The urgency for remediation is critical, given the high CVSS score and the potential for widespread exploitation. Organizations are encouraged to review their D-Link device configurations and apply the latest firmware updates as outlined by the vendor to mitigate this security risk.
D-Link has issued a patch to address this vulnerability, and organizations are recommended to follow the vendor's guidelines to ensure their systems are protected.
Vulnerability Details
This vulnerability allows authenticated users of D-Link DWL-2600AP devices to perform OS command injection via the Save Configuration functionality in the web interface. By manipulating the parameters in the request to admin.cgi?action=config_save, an attacker can inject arbitrary commands due to improper validation of user input.
The CVSS score of 7.8 signifies high severity, indicating that it is both critical and requires immediate action. The attack vector is local, and the complexity is low, suggesting that minimal effort is needed for successful exploitation. With confidentiality, integrity, and availability impacts all rated as high, the potential consequences for organizations are severe.
Affected systems include all versions of D-Link DWL-2600AP firmware prior to the patch. Organizations should review their devices to determine if they are using vulnerable firmware.
Technical Analysis
The root cause of the vulnerability stems from improper handling of user input in the web interface. Specifically, the Save Configuration functionality does not adequately sanitize input, allowing for OS command injection through crafted requests. The attack vector is local, requiring access to the web interface, which can be exploited by any authenticated user with low privileges.
The attack complexity is low, meaning that a potential attacker does not need extensive technical skills to exploit this vulnerability. User interaction is not required, making the attack even easier to execute. The impact on confidentiality, integrity, and availability is high, as successful exploitation could lead to unauthorized access, data loss, and service disruptions.
Risk & Impact Analysis
Organizations utilizing D-Link DWL-2600AP devices should be acutely aware of the risks associated with this vulnerability. The potential for unauthorized command execution poses a significant threat to network integrity and data security. The blast radius could extend to any devices or services dependent on the affected access point, leading to broader implications for organizational security.
Given the high CVSS score and the indication of active exploitation, organizations must act urgently. The risk to organizations includes unauthorized access to sensitive data and the possibility of network compromise. It is essential for organizations to prioritize remediation efforts and apply patches to mitigate the risk associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
All versions of D-Link DWL-2600AP firmware prior to 4.2.0.15 are affected. Organizations must ensure they are running the latest firmware to protect against this vulnerability.
Mitigation & Remediation
D-Link has released a patch to address this vulnerability. Organizations should apply updates per vendor instructions to ensure their devices are secured. If updates are unavailable, discontinuing use of the product is recommended until a fix can be applied.
Additionally, organizations should consider implementing network segmentation and access controls to limit exposure of the affected devices. Regular security audits and monitoring can help detect any anomalous behavior that may indicate an exploitation attempt.
For further information, organizations can refer to the D-Link advisory for additional guidance on patching and securing their systems. Engaging in continuous security testing, such as continuous security testing can also provide insights into potential vulnerabilities.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for unusual activity related to configuration changes. Indicators of compromise may include unexpected command executions or unauthorized access attempts. Implementing network signatures to detect abnormal traffic patterns can also aid in identifying exploitation attempts.
AppSecure Threat Intelligence Insight
The D-Link DWL-2600AP command injection vulnerability illustrates the ongoing risks associated with network devices. As organizations increasingly rely on such devices, it is crucial to prioritize security measures to mitigate risks. This vulnerability highlights the importance of regular firmware updates and security assessments.
Security teams must remain vigilant and proactive in addressing vulnerabilities across their infrastructure. For organizations looking to enhance their security posture, engaging in penetration testing and following best practices can greatly reduce the risk of exploitation.
Finally, understanding the evolving landscape of vulnerabilities and threats is essential for effective security management. Organizations should refer to resources such as the penetration testing methodology for insights into proactive security measures.
By adopting a comprehensive security strategy, organizations can better defend against vulnerabilities like CVE-2019-20500 and other emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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