Vulnerability CVE-2011-3486
Published: 2011-09-16   Modified: 2012-02-13

Description:
Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Beckhoff TwinCAT Denial of Service
Luigi Auriemma
20.09.2011

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Beckhoff -> Twincat 

 References:
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf
http://xforce.iss.net/xforce/xfdb/69765
http://osvdb.org/75495
http://aluigi.altervista.org/adv/twincat_1-adv.txt
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