Detections
Analytics

Schneider Electric Modicon Multiple Controllers HTTP Response Splitting

high Nessus Network Monitor Plugin ID 720248

Synopsis

Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers improperly handle CRLF Sequences in HTTP Headers potentially causing denial-of-service.

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 about 1 minute by sending a specially crafted HTTP request.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

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

Plugin Details

Severity: High

ID: 720248

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 11/30/2018

Vulnerability Publication Date: 11/30/2018

Reference Information

CVE: CVE-2018-7830