CVE-2017-11587 : Vulnerability Insights and Analysis

A directory traversal vulnerability affecting Cisco DDR2200 and DDR2201v1 ADSL2+ Residential Gateways.

Understanding CVE-2017-11587

What is CVE-2017-11587?

This CVE identifies a directory traversal vulnerability present in the filename parameter of the /download.conf URI on Cisco DDR2200 and DDR2201v1 ADSL2+ Residential Gateways.

The Impact of CVE-2017-11587

The vulnerability allows unauthorized users to access sensitive system files and potentially execute malicious actions on affected devices.

Technical Details of CVE-2017-11587

Vulnerability Description

The vulnerability enables attackers to traverse directories by manipulating the filename parameter in the /download.conf URI.

Affected Systems and Versions

Cisco DDR2200 ADSL2+ Residential Gateway DDR2200B-NA-AnnexA-FCC-V00.00.03.45.4E
Cisco DDR2201v1 ADSL2+ Residential Gateway DDR2201v1-NA-AnnexA-FCC-V00.00.03.28.3

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific requests to the affected URI, allowing them to access unauthorized directories and files.

Mitigation and Prevention

Immediate Steps to Take

Implement access controls and restrict access to sensitive directories.
Regularly monitor and analyze network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Keep systems up to date with the latest security patches and firmware updates.
Educate users and administrators about secure configuration practices.

Patching and Updates

Ensure that affected devices are updated with the latest firmware releases from Cisco to mitigate the directory traversal vulnerability.