CVE-2017-6620 : What You Need to Know

Cisco CVR100W Wireless-N VPN Router has a vulnerability in its remote management access control list (ACL) feature, allowing unauthenticated remote attackers to bypass the ACL.

Understanding CVE-2017-6620

This CVE involves a vulnerability in the remote management ACL feature of the Cisco CVR100W Wireless-N VPN Router.

What is CVE-2017-6620?

The vulnerability allows unauthenticated remote attackers to bypass the remote management ACL by exploiting an incorrect ACL decision implementation during connection requests to the remote management interface.

The Impact of CVE-2017-6620

Remote attackers can bypass the remote management ACL without authentication.
Successful exploitation enables unauthorized access to the targeted device.

Technical Details of CVE-2017-6620

This section provides detailed technical information about the CVE.

Vulnerability Description

Incorrect implementation of ACL decision during connection requests.
Exploitable by sending a connection to the management IP address or domain name of the device.

Affected Systems and Versions

Cisco CVR100W Wireless-N VPN Routers running firmware older than version 1.0.1.24.

Exploitation Mechanism

Attacker sends a connection to the management IP address or domain name of the targeted device.

Mitigation and Prevention

Protect your systems from CVE-2017-6620 with these mitigation strategies.

Immediate Steps to Take

Update the firmware of Cisco CVR100W Wireless-N VPN Routers to version 1.0.1.24 or newer.
Ensure Remote Management configuration is set to Enabled with proper ACL rules.

Long-Term Security Practices

Regularly monitor and audit remote management access to detect unauthorized activities.
Implement network segmentation to limit the impact of potential breaches.
Educate users on secure remote management practices.

Patching and Updates

Stay informed about security advisories and patches released by Cisco to address vulnerabilities like CVE-2017-6620.