Vulnerability CVE-2013-6920


Published: 2013-12-06   Modified: 2013-12-07

Description:
Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.

Type:

CWE-287

(Improper Authentication)

Vendor: Siemens
Product: Sinamics s/g family firmware 
Version: 4.6;
Product: Sinamics g120p 
Product: Sinamics g110 
Product: Sinamics s150 
Product: Sinamics g150 
Product: Sinamics g120 
Product: Sinamics s110 
Product: Sinamics g120d 
Product: Sinamics s120cm 
Product: Sinamics g130 
Product: Sinamics g110d 
Product: Sinamics g180 
Product: Sinamics g120c 
Product: Sinamics s120 

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
10/10
10/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete

 References:
http://ics-cert.us-cert.gov/advisories/ICSA-13-338-01
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-742938.pdf

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