Schneider Electric Modicon M340 SNMP Server SNMP Packet Truncate unusual condition

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability was found in Schneider Electric BMXNOR0200H Ethernet Serial RTU Module and Modicon M340 (SCADA Software) (the affected version is unknown). It has been classified as problematic. Affected is an unknown code of the component SNMP Server. The manipulation as part of a SNMP Packet leads to a unusual condition vulnerability (Truncate). CWE is classifying the issue as CWE-754. 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. This is going to have an impact on availability. CVE summarizes:

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions) and Modicon M340 controller (all firmware versions), which could cause denial of service when truncated SNMP packets on port 161/UDP are received by the device.

The weakness was released 09/17/2019 (Website). The advisory is shared for download at schneider-electric.com. This vulnerability is traded as CVE-2019-6813 since 01/25/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

It is possible to mitigate the weakness by firewalling udp/161 (snmp).

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Truncate
Class: Unusual condition / Truncate
CWE: CWE-754
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

01/25/2019 🔍
09/17/2019 +235 days 🔍
09/18/2019 +1 days 🔍
08/28/2020 +345 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: schneider-electric.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-6813 (🔍)

Entryinfo

Created: 09/18/2019 11:24
Updated: 08/28/2020 21:54
Changes: 09/18/2019 11:24 (58), 08/28/2020 21:54 (1)
Complete: 🔍

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