CVE-2017-3191 Explained : Impact and Mitigation
Learn about CVE-2017-3191 affecting D-Link DIR-130 & DIR-330 routers. Discover the impact, affected systems, exploitation details, and mitigation steps to secure your network.
D-Link DIR-130 and DIR-330 routers with specific firmware versions are susceptible to an authentication bypass vulnerability that could allow unauthorized access to certain administrator-only pages.
Understanding CVE-2017-3191
This CVE entry highlights a security issue in D-Link routers that could be exploited by attackers to bypass authentication mechanisms.
What is CVE-2017-3191?
The vulnerability in D-Link DIR-130 (firmware version 1.23) and DIR-330 (firmware version 1.12) routers enables remote attackers to manipulate POST requests, circumventing the need for credentials and gaining access to restricted pages.
The Impact of CVE-2017-3191
The authentication bypass vulnerability poses a significant risk as it allows unauthorized individuals to access sensitive administrator pages without proper authentication, potentially leading to unauthorized configuration changes or data theft.
Technical Details of CVE-2017-3191
This section delves into the specifics of the vulnerability.
Vulnerability Description
The flaw in the remote login pages of affected D-Link routers permits an attacker to bypass authentication, granting access to administrator-only sections like tools_admin.asp without valid credentials.
Affected Systems and Versions
- Product: DIR-130
- Vendor: D-Link
- Firmware Version: 1.23
- Product: DIR-330
- Vendor: D-Link
- Firmware Version: 1.12
Exploitation Mechanism
By manipulating the POST request on the remote management login page, attackers can exploit the vulnerability to bypass authentication and access restricted areas.
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security measures.
Immediate Steps to Take
- Disable remote management if not essential to prevent external access to the login page.
- Regularly monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Implement strong, unique passwords for router access to enhance security.
- Keep router firmware up to date to patch known vulnerabilities and enhance overall security.
- Consider using VPNs for secure remote access to the network.
Patching and Updates
Ensure timely installation of firmware updates provided by D-Link to address the authentication bypass vulnerability.