CVE-2018-7830

moderate-risk
Published 2018-11-30

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.

Do I need to act?

~
2.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Modicom M340 Firmware
Modicom Premium Firmware
Modicom Quantum Firmware
Modicom Bmxnor0200H Firmware

Affected Vendors

Schneider-Electric

References (4)

Vendor Advisory https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
Exploit https://www.tenable.com/security/research/tra-2018-38
Vendor Advisory https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
Exploit https://www.tenable.com/security/research/tra-2018-38
42
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 6/34 · Minimal
Exposure 10/34 · Low