core.axis.txt

` Core Security Technologies Advisory  
http://www.coresecurity.com  
  
Axis Network Camera HTTP Authentication Bypass  
  
  
  
Date Published: 2003-05-27  
  
Last Update: 2003-05-23  
  
Advisory ID: CORE-2003-0403  
  
Bugtraq ID: 7652  
  
CVE Name: CAN-2003-0240  
  
Title: Axis Network Camera HTTP Authentication Bypass  
  
Class: Access Validation Error  
  
Remotely Exploitable: Yes  
  
Locally Exploitable: No  
  
Advisory URL:  
http://www.coresecurity.com/common/showdoc.php?idx=329&idxseccion=10  
  
Vendors contacted:  
- Axis Communications  
. Core Notification: 2003-04-10  
. Notification acknowledged by Axis: 2003-04-17  
. 2.34 Release candidate for the Axis 2400/2401 Video Servers  
available: 2003-04-17  
. Fixed versions available for all affected products: 2003-05-27  
  
Release Mode: COORDINATED RELEASE  
  
  
*Vulnerability Description:*  
  
An Axis Network Camera captures and transmits live images directly  
over an IP network (e.g. LAN/intranet/Internet), enabling users to  
remotely view and/or manage the camera from a Web browser on any  
computer. For more information see http://www.axis.com  
  
After setting up the Axis Camera, the user is provided with  
Web-based Administration Tools for configuring and managing the  
camera by accessing http://camera-ip/admin/admin.shtml, which  
requires a username and password.  
  
We have discovered the following security vulnerability: by accessing  
http://camera-ip//admin/admin.shtml  
(notice the double slash) the authentication for "admin" is bypassed  
and an attacker gains direct access to the configuration.  
  
Using this vulnerability, an attacker can reset the root password,  
then enable the telnet server by modifying configuration files,  
giving the attacker interactive access to a Unix like command line,  
allowing her to execute arbitrary commands as root.  
  
  
*Vulnerable Packages:*  
  
. AXIS 2100 Network Camera versions 2.32 and previous  
. AXIS 2110 Network Camera versions 2.32 and previous  
. AXIS 2120 Network Camera versions 2.32 and previous  
. AXIS 2130 PTZ Network Camera versions 2.32 and previous  
. AXIS 2400 Video Server versions 2.32 and previous  
. AXIS 2401 Video Server versions 2.32 and previous  
. AXIS 2420 Network Camera versions 2.32 and previous  
. AXIS 2460 Network DVR versions 3.00 and previous  
. AXIS 250S Video Server versions 3.02 and previous  
  
  
*Solution/Vendor Information/Workaround:*  
  
Axis Communications has released new firmwares closing this  
vulnerability in its Network Camera and Video Server products.  
  
New releases are available at:  
  
AXIS 2100 Network Camera: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2100/2_34/  
  
AXIS 2110 Network Camera: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2110/2_34/  
  
AXIS 2120 Network Camera: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2120/2_34/  
  
AXIS 2130 Network Camera: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2130/2_34/  
  
AXIS 2400 Video Server: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2400/2_34/  
  
AXIS 2401 Video Server: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2401/2_34/  
  
AXIS 2420 Network Camera: 2.34  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2420/2_34/  
  
AXIS 2460 Network DVR: 3.10  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_2460/3_10/  
  
AXIS 250S Video Server: 3.03  
ftp://ftp.axis.com/pub_soft/cam_srv/cam_250s/3_03/  
  
Recommended Actions:  
We strongly recommend that all devices are updated to these  
firmware versions.  
  
  
*Credits:*  
  
This vulnerability was found by Juliano Rizzo from Core Security  
Technologies.  
  
We wish to thank Joacim Tullberg from Axis for his quick response to  
this issue.  
  
  
*Technical Description - Exploit/Concept Code:*  
  
We have discovered the following security vulnerability: by accessing  
http://camera-ip//admin/admin.shtml  
(notice the double slash) the authentication for "admin" is bypassed  
and an attacker gains direct access to the configuration.  
  
In the same way, an attacker can access the other administration  
tools for the camera, for example:  
http://camera-ip//admin/img_general.shtml  
http://camera-ip//admin/netw_tcp.shtml  
http://camera-ip//admin/sys_date.shtml  
http://camera-ip//admin/com_port.shtml  
http://camera-ip//admin/op_general.shtml  
http://camera-ip//admin/sys_motiond.shtml  
  
Note that the workaround for a recently published Axis HTTP Server  
vulnerability (see reference [1]) was to add authentication to  
some particular paths. With this vulnerability the authentication  
can be bypassed, so the mentioned Information Disclosure  
vulnerability can still be exploited.  
  
The affected Axis devices run a Linux like operating system. With  
this vulnerability an attacker can reset the root password. Then  
using the default open ftp server, the attacker can download  
configuration files, modify these files and upload them again.  
Modifying /etc/inittab it is possible to enable the Telnet server  
(see [2] a technical note explaining how to enable Telnet support),  
giving the attacker interactive access to a Unix like command line.  
Axis provides free developer tools (see [3]), so it is feasible  
for an attacker to build tools like port scanners or proxies to  
start attacks from the compromised camera (which are usually  
installed inside internal networks) which could lead to the  
compromise of the internal network.  
  
  
*References:*  
  
[1] Axis Communications HTTP Server Messages Information Disclosure  
Vulnerability (published 2003-02-28):  
http://www.securityfocus.com/bid/6980/  
  
[2] Technical Note: Enable Telnet Support in the Axis Camera Servers  
http://www.axis.com/techsup/cam_servers/tech_notes/telnet_support.htm  
As stated in this page: "You should enable this option for experimental  
use only. Never leave the Telnet access enabled when having the  
Network Camera installed on a public site."  
  
[3] Axis' developer site (where a compiler and other development  
tools can be downloaded):  
http://developer.axis.com/  
  
  
*About Core Security Technologies*  
  
Core Security Technologies develops strategic security solutions for  
Fortune 1000 corporations, government agencies and military  
organizations. The company offers information security software and  
services designed to assess risk and protect and manage information  
assets.  
Headquartered in Boston, MA, Core Security Technologies can be  
reached at 617-399-6980 or on the Web at http://www.coresecurity.com.  
  
To learn more about CORE IMPACT, the first comprehensive penetration  
testing framework, visit:  
http://www.coresecurity.com/products/coreimpact  
  
  
*DISCLAIMER:*  
  
The contents of this advisory are copyright (c) 2003 CORE Security  
Technologies and may be distributed freely provided that no fee is  
charged for this distribution and proper credit is given.  
  
$Id: Axis-advisory.txt,v 1.7 2003/05/23 20:17:29 carlos Exp $  
  
  
  
  
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