CVE-2019-17506 Explained : Impact and Mitigation
Learn about CVE-2019-17506 affecting D-Link DIR-868L B1-2.03 and DIR-817LW A1-1.04 routers. Discover how unauthorized access to web interfaces can lead to remote control of the device.
D-Link DIR-868L B1-2.03 and DIR-817LW A1-1.04 routers have a vulnerability that allows unauthorized access to certain web interfaces without authentication, potentially leading to remote control of the router.
Understanding CVE-2019-17506
These routers have web interfaces that can be accessed without authentication, enabling attackers to obtain sensitive information and potentially take control of the device.
What is CVE-2019-17506?
The vulnerability in D-Link routers allows attackers to retrieve the router's username, password, and other details by exploiting specific values in the web interface.
The Impact of CVE-2019-17506
Exploiting this vulnerability can result in unauthorized access to the router, potentially leading to remote control by malicious actors.
Technical Details of CVE-2019-17506
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw in D-Link DIR-868L B1-2.03 and DIR-817LW A1-1.04 routers allows attackers to access certain web interfaces without authentication, compromising sensitive information.
Affected Systems and Versions
- D-Link DIR-868L B1-2.03
- D-Link DIR-817LW A1-1.04
Exploitation Mechanism
Attackers can exploit the vulnerability by using a specific DEVICE.ACCOUNT value for SERVICES along with AUTHORIZED_GROUP=1%0a to access getcfg.php and retrieve sensitive router information.
Mitigation and Prevention
Protecting against this vulnerability is crucial to ensure the security of D-Link routers.
Immediate Steps to Take
- Disable remote access to the router's web interface if not required
- Change default login credentials to strong, unique passwords
- Regularly monitor router activity for any unauthorized access
Long-Term Security Practices
- Keep routers' firmware up to date with the latest security patches
- Implement network segmentation to isolate the router from critical systems
Patching and Updates
- Check for firmware updates from D-Link and apply them promptly to address security vulnerabilities