PT-2019-18365 · Schneider Electric · Modicon M340+1

Published 2019-09-17 · Updated 2022-02-03 · CVE-2019-6813

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions BMXNOR0200H Ethernet / Serial RTU module (all firmware versions) Modicon M340 controller (all firmware versions)

Description A vulnerability exists that could cause denial of service when truncated SNMP packets on port 161/UDP are received by the device. This issue is related to improper check for unusual or exceptional conditions.

Recommendations For BMXNOR0200H Ethernet / Serial RTU module, restrict access to port 161/UDP to minimize the risk of exploitation. For Modicon M340 controller, avoid using the SNMP protocol until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

Related Identifiers

CVE-2019-6813

Affected Products

Bmxnor0200H

Modicon M340

References · 4

• https://schneider-electric.com/en/download/document/SEVD-2019-225-03 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-6813 · Security Note
• https://schneider-electric.com/en/download/document/SEVD-2019-225-02 · Vendor Advisory
• https://security.cse.iitk.ac.in/responsible-disclosure · Note