Vulnerability CVE-2019-6833


Published: 2019-09-17

Description:
A CWE-754 ? Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTO, XBTGH, HMIGTU, HMIGTUX, HMISCU, HMISTU, XBTGT, XBTGT, HMIGXO, HMIGXU), which could cause a temporary freeze of the HMI when a high rate of frames is received. When the attack stops, the buffered commands are processed by the HMI panel.

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Schneider-electric -> Hmigtu firmware 
Schneider-electric -> Hmigto firmware 
Schneider-electric -> Hmigxo firmware 
Schneider-electric -> Hmigxu firmware 
Schneider-electric -> Hmiscu firmware 
Schneider-electric -> Hmisto firmware 
Schneider-electric -> Hmistu firmware 
Schneider-electric -> Xbtgh firmware 
Schneider-electric -> Xbtgt firmware 

 References:
https://security.cse.iitk.ac.in/responsible-disclosure
https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-225-01

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