CVE-2018-7830: schneider electric se embedded web servers in all modicon m340, premium, quantum plcs and bmxnor0200 HTTP Request/Response Splitting

Vulnerability summary

CVE-2018-7830 is a high (CVSS 7.5) HTTP Request/Response Splitting vulnerability in schneider electric se embedded web servers in all modicon m340, premium, quantum plcs and bmxnor0200. EPSS estimates a 2.42% chance of exploitation in the next 30 days, higher than 83.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 30-11-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.