CVE-2018-7830

Public Exploit

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.

References

Link	Tags
https://www.tenable.com/security/research/tra-2018-38	third party advisory exploit
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7830?: CVE-2018-7830 has been scored as a high severity vulnerability.
How to fix CVE-2018-7830?: To fix CVE-2018-7830, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7830 being actively exploited in the wild?: It is possible that CVE-2018-7830 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-7830?: CVE-2018-7830 affects Schneider Electric SE Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200.

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Description

Category

CWE-113 – Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

References

Frequently Asked Questions