D-Link Web Management Interface Vulnerability Lets Attackers Gain Device Access
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A critical vulnerability, designated as CVE-2024-13030, has been discovered in the web management interface of D-Link DIR-823G routers with firmware version 1.0.2B05_20181207. This vulnerability poses a significant security risk, allowing attackers to exploit improper access control mechanisms, leading to unauthorized access and potential device compromise.
This article dives into the details of this vulnerability, its implications, technical aspects, and mitigation strategies to safeguard affected devices.
Overview of the D-Link Vulnerability
The vulnerability stems from improper implementation of access control within the /HNAP1/ endpoint of the router’s web management interface. Attackers can manipulate several critical functions, including:
- SetAutoRebootSettings
- SetClientInfo
- SetDMZSettings
- SetFirewallSettings
- SetParentsControlInfo
- SetQoSSettings
- SetVirtualServerSettings
By exploiting these functionalities, attackers can gain unauthorized access, modify system settings, or even take control of the router remotely.
Severity of the Vulnerability
The vulnerability’s severity has been evaluated using the Common Vulnerability Scoring System (CVSS):
- CVSS 4.0: 6.9 (Medium)
- CVSS 3.1 and 3.0: 7.3 (High)
- CVSS 2.0: 7.5
Key factors contributing to the high severity include:
- Remote Exploitation: No physical access to the device is necessary.
- Lack of Authentication: Exploitation does not require valid credentials.
- Impact on CIA Triad: The vulnerability compromises confidentiality, integrity, and availability.
These scores underscore the need for immediate action to mitigate potential threats to networks utilizing the D-Link DIR-823G router.
Technical Details
The vulnerability resides in the router’s Home Network Administration Protocol (HNAP1). Specific issues include:
- Improper Access Control (CWE-284): Certain critical functions lack sufficient access restrictions.
- Incorrect Privilege Assignment (CWE-266): Attackers can escalate privileges, executing unauthorized commands.
An exploit for this vulnerability has already been publicly disclosed. Attackers can craft malicious requests targeting the router’s management interface to exploit this flaw.
Risk Implications
Without adequate safeguards, the exploitation of this vulnerability can lead to:
- Unauthorized remote access to the device.
- Modification of critical router settings.
- Complete device takeover, enabling further network penetration.
Organizations and individuals using the D-Link DIR-823G router face heightened risks, particularly in environments with sensitive data or critical operations.
Mitigation Strategies
Since D-Link has not released a patch to address this vulnerability, users are strongly advised to adopt the following measures:
- Restrict Remote Management Access: Limit access to trusted IP addresses or disable remote management entirely.
- Use Strong Passwords: Ensure local device passwords are strong, unique, and regularly updated.
- Monitor Network Activity: Be vigilant for unusual activity that could indicate an attempted exploitation.
- Upgrade Hardware: Replace unsupported or aging devices with newer models that receive regular security updates.
By implementing these steps, users can reduce the risk of exploitation and enhance their overall network security posture.
Discovery and Disclosure
The vulnerability was discovered and publicly disclosed by security researcher wxhwxhwxh_mie, with details published in VulDB. The public availability of the exploit code increases the urgency for affected users to secure their devices promptly.
How Technijian Can Help
At Technijian, we specialize in providing comprehensive cybersecurity solutions tailored to safeguard your organization’s network infrastructure. Our expert team can assist with:
- Vulnerability Assessments: Identify potential threats and security gaps in your network.
- Patch Management: Keep your devices up-to-date with the latest security patches.
- Incident Response: Rapidly detect and mitigate breaches or exploits targeting your devices.
- Custom Solutions: Implement robust firewalls, secure configurations, and advanced monitoring tools.
If you’re concerned about vulnerabilities in your network, contact Technijian today for tailored assistance and proactive cybersecurity measures.
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