ICS-CERT: Siemens Synco OZW Web Server Vulnerability

Monday, August 13, 2012

Infosec Island Admin

7fef78c47060974e0b8392e305f0daf0

Siemens has reported to ICS-CERT that a default password vulnerability exists in the Siemens Synco OZW Web Server device used for building automation systems. Siemens urges their customers to set a secure password on their device’s web interface. This vulnerability could be exploited remotely.

Siemens reports that the default password vulnerability affects the following Synco models:

• OZW775
• OZW672.01, OZW672.04, OZW672.16
• OZW772.01, OZW772.04, OZW772.16, OZW772.250.

For the listed products, all firmware versions prior to Version 4 do not force users to change their password on initial login.

IMPACT

An attacker could use the default password in these devices to gain unauthorized administrative access to the building automation network.

Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.

BACKGROUND

Siemens Synco OZW devices are used for remote operation and monitoring of building automation devices. The affected models offer interfaces that can be used over networks, such as the Internet.

VULNERABILITY OVERVIEW

DEFAULT PASSWORD:  Siemens Synco OZW devices are shipped with a default password protecting administrative functions. The installation procedure does not enforce a password change. This leaves a potential security gap in the asset owner/operator’s network. CVE-2012-3020 has been assigned to this vulnerability. A CVSS v2 base score of 9.0 has been assigned; the CVSS vector string is (AV:N/AC:L/Au:N/C:P/I:P/A:C).

EXPLOITABILITY:  This vulnerability could be exploited remotely.

EXISTENCE OF EXPLOIT:  No known public exploits specifically target this vulnerability.

DIFFICULTY:  An attacker with a low-skill level could exploit these vulnerabilities.

MITIGATION

Siemens has released a firmware update (Version 4) for the OZW672 and OZW772 devices that enforces a password change at initial login.d Customers may upgrade to this firmware version, but this is not required to change the default password on existing devices. Siemens urges customers to set a secure password on the web interface for all network devices.

The full ICS=CERT advisory can be found here:

Source:  http://www.us-cert.gov/control_systems/pdf/ICSA-12-214-01.pdf

Possibly Related Articles:
14234
SCADA
Industrial Control Systems
SCADA Authentication Access Control Network Security Siemens ICS-CERT Industrial Control Systems vulnerability Synco OZW
Post Rating I Like this!
Default-avatar
Carlson lson I heard that many of the articles in the sites assist us with writing essays and term papers. This is very much special to me to know about these services and and I really want to gather many information regarding these services. Please attach those type of files in my website http://www.paperseditingservice.com/ that can help many students in my college. Thanks.
1423897844
Default-avatar
Carlson lson The correspondence in the middle of customer and server happens utilizing the hypertext exchange convention. Pages conveyed are most as often as possible HTML reports, which may incorporate pictures, templates and scripts notwithstanding content substance.
https://app.box.com/s/v6fzclljs02c08aog08mok219aa2jtyq
1425104967
The views expressed in this post are the opinions of the Infosec Island member that posted this content. Infosec Island is not responsible for the content or messaging of this post.

Unauthorized reproduction of this article (in part or in whole) is prohibited without the express written permission of Infosec Island and the Infosec Island member that posted this content--this includes using our RSS feed for any purpose other than personal use.