OPC UA Modicon Communication Module: Insufficient Verification of Data Authenticity
CVE-2022-34763 is a high-severity insufficient verification of data authenticity vulnerability in OPC UA Modicon Communication Module from Schneider Electric, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version V1.10 as the first without the flaw, so updating OPC UA Modicon Communication Module to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.29% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update OPC UA Modicon Communication Module to V1.10 or a later version.
- Update X80 advanced RTU Communication Module to BMENOR2200H* or a later version.
- Read the advisory on download.schneider-electric.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Schneider Electric | OPC UA Modicon Communication Module | BMENUA0100 up to, but not including, V1.10 | V1.10 |
| Schneider Electric | X80 advanced RTU Communication Module | V2.01 up to, but not including, BMENOR2200H* | BMENOR2200H* |
| Schneider Electric | Opc Ua Module For M580 Firmware | 1.10 and earlier | Not stated |
| Schneider Electric | X80 Advanced Rtu Module Firmware | 2.01 and later | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 5.9 | Medium | CNA (se.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists that could cause loading of unauthorized firmware images due to improper verification of the firmware signature. Affected Products: X80 advanced RTU Communication Module (BMENOR2200H) (V2.01 and later), OPC UA Modicon Communication Module (BMENUA0100) (V1.10 and prior)
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
More Insufficient Verification of Data Authenticity vulnerabilities (CWE-345)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in OPC UA Modicon Communication Module
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
Recent Insufficient Verification of Data Authenticity vulnerabilities
- 7.2 High severity
- 10.0 High severity
- 10.0 High severity
- 7.8 High severity
- 9.8 Critical severity
- 7.5 High severity
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