(PT-2012-42) Positive Technologies Security Advisory
Multiple Cross Site Scripting and Cross Site Request Forgery vulnerabilities in Siemens Simatic WinCC WebNavigator

Vulnerable software

Siemens Simatic WinCC WebNavigator
Version: 7.0 SP3 and earlier

Application link:
http://www.siemens.com/

Vulnerabilities description

The specialists of the Positive Research center have revealed a multiple Cross Site Scripting and Cross Site Request Forgery vulnerabilities in Siemens Simatic WinCC WebNavigator.

• Multiple Cross Site Scripting

CVSS v2:
Base Score: 8.3
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:C)

CVE: CVE-2012-3031

Reflected Cross Site Scripting was found in POST parameters, GET parameters and referrers. If this attack is successful, the attacker can take over the WebNavigator session with the victim’s rights.

• Cross Site Request Forgery

CVSS v2:
Base Score: 7.8
Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:C)

CVE: CVE-2012-3028

Cross Site Request Forgery is related to the Cross Site Scripting vulnerability and works in a similar way: If a victim clicks on a malicious link, actions can be triggered in the browser, where WebNavigator is running.

How to fix

Update your software up to the latest version

Advisory status

16.07.2012 - Vendor is notified
16.07.2012 - Vendor gets vulnerability details
10.09.2012 - Vendor releases fixed version and details
13.09.2012 - Public disclosure

Credits

The vulnerabilities was discovered by Sergey Bobrov, Timur Yunusov, Artem Chaykin, Pavel Toporkov, Vladimir Kochetkov, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2012-42
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-864051.pdf

Reports on the vulnerabilities previously discovered by Positive Research:

http://ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/

About Positive Technologies

Positive Technologies www.ptsecurity.com is among the key players in the IT security market in Russia.

The principal activities of the company include the development of integrated tools for information security monitoring (MaxPatrol); providing IT security consulting services and technical support; development of the Securitylab leading Russian information security portal.

Among the clients of Positive Technologies, there are more than 40 state enterprises, more than 50 banks and financial organizations, 20 telecommunication companies, more than 40 plant facilities, as well as IT, service and retail companies from Russia, the CIS countries, the Baltic States, China, Ecuador, Germany, Great Britain, Holland, Iran, Israel, Japan, Mexico, the Republic of South Africa, Thailand, Turkey, and the USA.

Positive Technologies is a team of highly skilled developers, advisers and experts with years of vast hands-on experience. The company specialists possess professional titles and certificates; they are the members of various international societies and are actively involved in the IT security field development.