A vulnerability was found in D-Link DIR-859 firmware which allows for path traversal through the manipulation of an argument in the file /hedwig.cgi. This critical vulnerability is particularly concerning as it can be exploited remotely.
The CVSS score for this vulnerability is 5.3, which classifies it as medium severity. Organizations should be aware of the potential risks associated with this vulnerability, especially as it affects products that are no longer supported by the vendor.
Risk to organizations includes unauthorized access to sensitive information and potential control over affected devices. Given the current exploitability status, organizations should prioritize patching as this vulnerability may have active exploitation in the wild.
Organizations should prioritize patching immediately. The vendor has confirmed that the product is end-of-life and recommends retiring and replacing it.
Vulnerability Details
The vulnerability allows for path traversal due to improper validation of user input. This vulnerability affects the D-Link DIR-859 firmware version 1.06B01, specifically the HTTP POST Request Handler component. The manipulation of the argument service with the input ../../../../htdocs/webinc/getcfg/DHCPS6.BRIDGE-1.xml may lead to unauthorized access.
The vulnerability was published on January 21, 2024, and classified under CWE-22. Given the CVSS score of 5.3, it is essential for organizations to understand the implications of this vulnerability.
Technical Analysis
The root cause of the vulnerability stems from insufficient input validation, allowing an attacker to traverse directories and access sensitive files. The attack vector is network-based, and the complexity is low, requiring no privileges or user interaction.
As a result of the path traversal, there is a confidentiality impact, as sensitive data may be exposed. However, there is no integrity or availability impact associated with this vulnerability.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses significant risks, particularly for organizations using D-Link DIR-859 devices. The blast radius can be extensive if attackers exploit this vulnerability to gain unauthorized access to sensitive system configurations.
Given the medium urgency classification, organizations should address this vulnerability in their priority patch cycle, especially since the product is no longer supported.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The vulnerability affects D-Link DIR-859 firmware version 1.06B01. All versions prior to vendor patch are affected.
Mitigation & Remediation
Organizations should consider retiring and replacing the D-Link DIR-859 router as it is end-of-life. If a patch is available, upgrade to the latest firmware version. If patching is not possible, consider implementing network segmentation to limit exposure.
For more information on effective remediation strategies, organizations can reference penetration testing services.
Detection Guidance
Organizations should monitor logs for unusual HTTP POST requests to /hedwig.cgi, as this may indicate exploitation attempts. Behavioral anomalies related to unauthorized access should also be tracked.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the risks associated with legacy products that are no longer supported. Security teams should take proactive measures to phase out unsupported devices to minimize potential security threats.
This vulnerability represents a pattern where outdated hardware can lead to increased risk exposure. Security teams should regularly assess their inventories for unsupported products.
Strategically, organizations should prioritize regular security assessments and implement a robust asset management strategy to effectively manage and replace aging infrastructure.
For further reading on managing vulnerabilities, organizations can refer to resources on vulnerability management and penetration testing methodologies to strengthen their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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