Vulnerability CVE-2018-7830
Published: 2018-11-30

Description:
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a denial of service can occur for ~1 minute by sending a specially crafted HTTP request.

Type:

CWE-113

 (Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting'))

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
Schneider-electric -> Modicom bmxnor0200h firmware 
Schneider-electric -> Modicom m340 firmware 
Schneider-electric -> Modicom premium firmware 
Schneider-electric -> Modicom quantum firmware 

 References:
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
https://www.tenable.com/security/research/tra-2018-38
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