PT-2019-3847 · Schneider Electric · Modicon Bmenoc 0311+2

Published 2019-10-08 · Updated 2019-11-01 · CVE-2019-6849

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Modicon M580 (affected versions not specified) Modicon BMENOC 0311 (affected versions not specified) Modicon BMENOC 0321 (affected versions not specified)

Description A vulnerability exists that could cause the disclosure of sensitive information when using specific Modbus services provided by the REST API of the controller/communication module. The issue is related to the use of the Modbus service provided by the REST API, which can allow a remote attacker to expose protected information.

Recommendations For Modicon M580, consider restricting access to the Modbus services provided by the REST API until a fix is available. For Modicon BMENOC 0311, avoid using the Modbus service in the REST API to minimize the risk of exploitation. For Modicon BMENOC 0321, as a temporary workaround, consider disabling the use of specific Modbus services provided by the REST API until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2019-04209

CVE-2019-6849

Affected Products

Modicon Bmenoc 0311

Modicon Bmenoc 0321

Modicon M580

References · 4

• https://bdu.fstec.ru/vul/2019-04209 · Security Note
• https://schneider-electric.com/ww/en/download/document/SEVD-2019-281-04 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-6849 · Security Note
• https://schneider-electric.com/en/download/document/SEVD-2019-281-04 · Note