Cisco IOS FTP Backdoor Ripe for Hackers


Another flaw in Cisco’s IOS, this time a problem with FTP, the mechanism used to update the firmware on Cisco devices (routers & switches mostly).

You really don’t want someone playing around with your configuration files on your router do you?

IOS FTP, which comes disabled by default in IOS, is used to upload IOS software images and other software to routers and switches remotely. However, Cisco says attackers could exploit a vulnerability in the FTP server to gain access to the file system of an IOS-based router or switch and affect configuration settings.

“Unauthorized users could retrieve the device’s startup-config file from the filesystem,” Cisco says.”This file may contain information that could allow the attacker to gain escalated privileges.”

You can shutdown the FTP service on the IOS for the moment to be safe, and wait for the update.

The command is detailed below:

You could also setup an access control list to limit access to FTP.

In the meantime, Cisco says users should shut down IOS FTP if they are running the server on an affected system. (The command to do this is ‘ftp-server enable’.) The company says users can upload software to IOS devices through other methods, such as the ‘Secure Copy’ feature in the software. Users can also set up access control lists to restrict FTP access to a router or switch, Cisco adds.

The affected IOS versions are: 11.3, 12.0, 12.1, 12.2, 12.3 and 12.4. Cisco’s IOS XR is not vulnerable, and non-IOS Cisco devices are also safe.

So be careful if you are using Cisco kit, this is quite a bad hole.

Source: Network World

Posted in: Exploits/Vulnerabilities, Networking Hacking Tools

, ,


Latest Posts:


OWASP APICheck - HTTP API DevSecOps Toolset OWASP APICheck – HTTP API DevSecOps Toolset
APICheck is an HTTP API DevSecOps toolset, it integrates existing tools, creates execution chains easily and is designed for integration with 3rd parties.
trident - Automated Password Spraying Tool trident – Automated Password Spraying Tool
The Trident project is an automated password spraying tool developed to be deployed on multiple cloud providers and provides advanced options around scheduling
tko-subs - Detect & Takeover Subdomains With Dead DNS Records tko-subs – Detect & Takeover Subdomains With Dead DNS Records
tko-subs is a tool that helps you to detect & takeover subdomains with dead DNS records, this could be dangling CNAMEs point to hosting services and more.
Arcane - Tool To Backdoor iOS Packages (iPhone ARM) Arcane – Tool To Backdoor iOS Packages (iPhone ARM)
Arcane is a simple script tool to backdoor iOS packages (iPhone ARM) and create the necessary resources for APT repositories.
SharpHose - Asynchronous Password Spraying Tool SharpHose – Asynchronous Password Spraying Tool
SharpHose is an asynchronous password spraying tool in C# for Windows environments that takes into consideration fine-grained password policies and can be run over Cobalt Strike's execute-assembly.
Axiom - Pen-Testing Server For Collecting Bug Bounties Axiom – Pen-Testing Server For Collecting Bug Bounties
Project Axiom is a set of utilities for managing a small dynamic infrastructure setup for bug bounty, basically a pen-testing server out of the box with 1-line.


One Response to Cisco IOS FTP Backdoor Ripe for Hackers

  1. Daniel June 4, 2007 at 8:48 am #

    another in the eternal stream of router vulns/sploits