CONPROSYS HMI System (CHS): Cleartext Storage of Sensitive Information
CVE-2023-28713 is a high-severity cleartext storage of sensitive information vulnerability in CONPROSYS HMI System (CHS) from Contec, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected CONPROSYS HMI System (CHS) versions: versions prior to 3.5.3. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.43% 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 Conprosys Hmi System to 3.5.3 or a later version.
- Read the advisory on contec.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Contec | CONPROSYS HMI System (CHS) | versions prior to 3.5.3 | Not stated |
| Contec | Conprosys Hmi System | before 3.5.3 | 3.5.3 |
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
- LowA basic user account is enough.
- 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:L/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.1 | High | NVD |
| CVSS 3.1 | 8.1 | High | CISA (ADP) |
Official description
Plaintext storage of a password exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. Because account information of the database is saved in a local file in plaintext, a user who can access the PC where the affected product is installed can obtain the information. As a result, information in the database may be obtained and/or altered by the user.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Cleartext Storage of Sensitive Information
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.
How developers prevent this class of flaw
- When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to encrypt the data at rest.
- In some systems/environments such as cloud, the use of double encryption (at both the software and hardware layer) might be required, and the developer might be solely responsible for both layers, instead of shared responsibility with the administrator of the broader system/environment.
More Cleartext Storage of Sensitive Information vulnerabilities (CWE-312)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Third-party and government advisories
- jvn.jp/en/vu/JVNVU93372935/Third Party Advisory
Other vulnerabilities in CONPROSYS HMI System (CHS)
- 8.8 High severity
- 7.5 High severity
- 7.2 High severity
- 8.8 High severity
- 7.8 High severity
- 7.5 High severity
Recent Cleartext Storage of Sensitive Information vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 4.9 Medium severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
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