inSCADA: Improper Protection for Outbound Error Messages and Alert Signals
CVE-2023-0839 is a critical-severity improper protection for outbound error messages and alert signals vulnerability in inSCADA from ProMIS Process Co., with a CVSS 3.1 base score of 9.8 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 20230115-1 as the first without the flaw, so updating inSCADA to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.64% chance of exploitation within 30 days, higher than 51% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update inSCADA to 20230115-1 or a later version.
- 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 |
|---|---|---|---|
| ProMIS Process Co. | inSCADA | before 20230115-1 | 20230115-1 |
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
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | CNA (usom.gov.tr) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
Improper Protection for Outbound Error Messages and Alert Signals vulnerability in ProMIS Process Co. InSCADA allows Account Footprinting. This issue affects inSCADA: before 20230115-1.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Protection for Outbound Error Messages and Alert Signals
Untrusted agents can disable alerts about signal conditions exceeding limits or the response mechanism that handles such alerts.
How developers prevent this class of flaw
- Alert signals generated by critical events should be protected from access by untrusted agents. Only hardware or trusted firmware modules should be able to alter the alert configuration.
More Improper Protection for Outbound Error Messages and Alert Signals vulnerabilities (CWE-1320)
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
Third-party and government advisories
- usom.gov.tr/bildirim/tr-23-0127Third Party Advisory
Other references
Recent Improper Protection for Outbound Error Messages and Alert Signals vulnerabilities
- 7.8 High severity
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