CVE-2019-6819 : A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability ex

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.

Published 2019-05-22 20:29:02

Updated 2022-04-19 15:35:34

Source Schneider Electric SE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2019-6819

Schneider-electric » Modicon M580 Firmware
Versions before (<) 2.80
cpe:2.3:o:schneider-electric:modicon_m580_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Schneider-electric » Bmeh582040 » Version: N/A
When used together with: Schneider-electric » Bmeh582040c » Version: N/A
When used together with: Schneider-electric » Bmeh584040 » Version: N/A
When used together with: Schneider-electric » Bmeh584040c » Version: N/A
When used together with: Schneider-electric » Bmeh586040 » Version: N/A
When used together with: Schneider-electric » Bmeh586040c » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep581020 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep581020h » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep582020 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep582020h » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep582040 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep582040h » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep582040s » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep583020 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep583040 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep584020 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep584040 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep584040s » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep585040 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep585040c » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep586040 » Version: N/A
When used together with: Schneider-electric » Modicon M580 Bmep586040c » Version: N/A
Schneider-electric » Modicon M340 Firmware
Versions before (<) 3.01
cpe:2.3:o:schneider-electric:modicon_m340_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Schneider-electric » Bmxp341000 » Version: N/A
When used together with: Schneider-electric » Bmxp341000h » Version: N/A
When used together with: Schneider-electric » Bmxp342000 » Version: N/A
When used together with: Schneider-electric » Bmxp3420102 » Version: N/A
When used together with: Schneider-electric » Bmxp3420102cl » Version: N/A
When used together with: Schneider-electric » Bmxp342020 » Version: N/A
When used together with: Schneider-electric » Bmxp342020h » Version: N/A
When used together with: Schneider-electric » Bmxp3420302 » Version: N/A
When used together with: Schneider-electric » Bmxp3420302cl » Version: N/A
When used together with: Schneider-electric » Bmxp3420302h » Version: N/A
Schneider-electric » Modicon Quantum Firmware
cpe:2.3:o:schneider-electric:modicon_quantum_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Schneider-electric » Modicon Quantum » Version: N/A
Schneider-electric » Modicon Premium Firmware
cpe:2.3:o:schneider-electric:modicon_premium_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Schneider-electric » Modicon Premium » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-6819

EPSS FAQ

0.54%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 65 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-6819

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-6819

CWE-754 Improper Check for Unusual or Exceptional Conditions

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
Assigned by:
- cybersecurity@se.com (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2019-6819

http://www.securityfocus.com/bid/109004

Schneider Electric Modicon Controllers CVE-2019-6819 Denial of Service Vulnerability
Broken Link
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-05/

Security Notification - Modicon Controllers V1.1 | Schneider Electric
Vendor Advisory

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Vulnerability Details : CVE-2019-6819

Products affected by CVE-2019-6819

Exploit prediction scoring system (EPSS) score for CVE-2019-6819

CVSS scores for CVE-2019-6819

CWE ids for CVE-2019-6819

References for CVE-2019-6819