Vulnerability CVE-2011-3321
Published: 2011-09-16   Modified: 2012-02-13

Description:
Heap-based buffer overflow in the Siemens WinCC Runtime Advanced Loader, as used in SIMATIC WinCC flexible Runtime and SIMATIC WinCC (TIA Portal) Runtime Advanced, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a crafted packet to TCP port 2308.

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Siemens -> Simatic wincc flexible runtime 
Siemens -> Simatic wincc runtime 

 References:
http://www.us-cert.gov/control_systems/pdf/ICSA-11-244-01.pdf
http://xforce.iss.net/xforce/xfdb/69803
http://support.automation.siemens.com/WW/view/en/29054992
http://cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdf
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