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

, ,


Latest Posts:


zBang - Privileged Account Threat Detection Tool zBang – Privileged Account Threat Detection Tool
zBang is a risk assessment tool for Privileged Account Threat Detection on a scanned network, organizations & red teams can use it to identify attack vectors
Memhunter - Automated Memory Resident Malware Detection Memhunter – Automated Memory Resident Malware Detection
Memhunter is an Automated Memory Resident Malware Detection tool for the hunting of memory resident malware at scale, improving threat hunter analysis process.
Sandcastle - AWS S3 Bucket Enumeration Tool Sandcastle – AWS S3 Bucket Enumeration Tool
Sandcastle is an Amazon AWS S3 Bucket Enumeration Tool, formerly known as bucketCrawler. The script takes a target's name as the stem argument (e.g. shopify).
Astra - API Automated Security Testing For REST Astra – API Automated Security Testing For REST
Astra is a Python-based tool for API Automated Security Testing, REST API penetration testing is complex due to continuous changes in existing APIs.
Judas DNS - Nameserver DNS Poisoning Attack Tool Judas DNS – Nameserver DNS Poisoning Attack Tool
Judas DNS is a Nameserver DNS Poisoning Attack Tool which functions as a DNS proxy server built to be deployed in place of a taken over nameserver to perform targeted exploitation.
dsniff Download - Tools for Network Auditing & Password Sniffing dsniff Download – Tools for Network Auditing & Password Sniffing
Dsniff download is a collection of tools for network auditing & penetration testing. Dsniff, filesnarf, mailsnarf, msgsnarf, URLsnarf, and WebSpy passively monitor a network


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