CVE-2017-11589 : Exploit Details and Defense Strategies

Cisco DDR2200 and DDR2201v1 ADSL2+ Residential Gateways lack access control for critical files, potentially exposing sensitive information.

Understanding CVE-2017-11589

This CVE highlights a vulnerability in Cisco residential gateway devices that could lead to unauthorized access to sensitive files.

What is CVE-2017-11589?

The Cisco DDR2200 and DDR2201v1 ADSL2+ Residential Gateways suffer from a lack of access control for various crucial files, making them vulnerable to exploitation.

The Impact of CVE-2017-11589

The absence of access control on these devices could allow malicious actors to view or modify sensitive configuration files, potentially compromising network security and user privacy.

Technical Details of CVE-2017-11589

This section delves into the specifics of the vulnerability.

Vulnerability Description

The affected Cisco devices do not enforce access control for critical files such as info.html, wancfg.cmd, and more, leaving them exposed to unauthorized access.

Affected Systems and Versions

Product: Cisco DDR2200 ADSL2+ Residential Gateway DDR2200B-NA-AnnexA-FCC-V00.00.03.45.4E
Product: Cisco DDR2201v1 ADSL2+ Residential Gateway DDR2201v1-NA-AnnexA-FCC-V00.00.03.28.3
Versions: Not specified

Exploitation Mechanism

Without access control, threat actors can potentially exploit this vulnerability to access, manipulate, or extract sensitive information from the affected devices.

Mitigation and Prevention

Protecting against CVE-2017-11589 requires immediate actions and long-term security measures.

Immediate Steps to Take

Implement network segmentation to limit access to vulnerable devices and files.
Monitor network traffic for any suspicious activities that may indicate unauthorized access.
Regularly review and update access control policies to prevent unauthorized file access.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
Educate users and administrators on best practices for securing network devices and sensitive information.

Patching and Updates

Apply firmware updates and patches provided by Cisco to address the access control issue and enhance device security.