MULTIPROG: Insufficient Verification of Data Authenticity
CVE-2022-31801 is a high-severity insufficient verification of data authenticity vulnerability in MULTIPROG from Phoenix Contact, with a CVSS 2.0 base score of 10.0 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected MULTIPROG versions: All Versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.16% chance of exploitation within 30 days, higher than 68% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of MULTIPROG you run against the affected versions below, and install the vendor's latest release.
- 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 |
|---|---|---|---|
| PHOENIX CONTACT | MULTIPROG | All Versions | Not stated |
| PHOENIX CONTACT | ProConOS | All Versions | Not stated |
| PHOENIX CONTACT | ProConOS eCLR | All Versions | 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
- Access vector
- NetworkCan be exploited remotely over a network.
- Access complexity
- LowNo special conditions are needed.
- Authentication
- NoneNo login is needed.
- Confidentiality
- CompleteAll data can be read.
- Integrity
- CompleteAny data can be modified.
- Availability
- CompleteThe system can be shut down completely.
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | CNA (cert.vde.com) |
| CVSS 2.0 | 10.0 | High | NVD |
Official description
An unauthenticated, remote attacker could upload malicious logic to the devices based on ProConOS/ProConOS eCLR in order to gain full control over the device.
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.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- cert.vde.com/en/advisories/VDE-2022-026/Mitigation, Third Party Advisory
Other vulnerabilities in MULTIPROG
- 7.5 High severity
- 9.8 Critical severity
Recent Insufficient Verification of Data Authenticity vulnerabilities
- 10.0 High severity
- 7.8 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.8 High severity
- 9.8 Critical severity
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