CENTUM VP series with VP6E5000(AD Suite…: Improper Authentication
CVE-2022-26034 is a critical-severity improper authentication vulnerability in CENTUM VP series with VP6E5000(AD Suite Engineering ServerFunction) installed and B/M9000 VP from Yokogawa Electric, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.98% chance of exploitation within 30 days, higher than 63% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of CENTUM VP series with VP6E5000(AD Suite Engineering ServerFunction) installed and B/M9000 VP you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on yokogawa.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 |
|---|---|---|---|
| Yokogawa Electric | CENTUM VP series with VP6E5000(AD Suite Engineering ServerFunction) installed and B/M9000 VP | Not specified in the record | Not stated |
| Yokogawa | B/m9000 Vp | r8.01.01 through r8.03.01 | Not stated |
| Yokogawa | Centum Vp | r6.01.10 through r6.09.00; r6.01.10 through r06.09.00 | 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
- HighAll data handled by the component can be read.
- 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:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.1 | Critical | NVD |
| CVSS 2.0 | 5.8 | Medium | NVD |
Official description
Improper authentication vulnerability in the communication protocol provided by AD (Automation Design) server of CENTUM VP R6.01.10 to R6.09.00, CENTUM VP Small R6.01.10 to R6.09.00, CENTUM VP Basic R6.01.10 to R6.09.00, and B/M9000 VP R8.01.01 to R8.03.01 allows an attacker to use the functions provided by AD server. This may lead to leakage or tampering of data managed by AD server.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- jvn.jp/vu/JVNVU99204686/index.htmlThird Party Advisory
Recent Improper Authentication vulnerabilities
- 8.8 High severity
- 10.0 Critical severity
- 9.8 Critical severity
- 8.1 High severity
- 9.1 Critical severity
- 8.1 High severity
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