CODESYS Development System: Exposure of Resource to Wrong Sphere
CVE-2023-3670 is a high-severity exposure of resource to wrong sphere vulnerability in CODESYS Development System from Codesys, with a CVSS 3.1 base score of 7.3 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, but only if a user takes part, for example by opening a link or file. The record lists version 3.5.17.0 as the first without the flaw, so updating CODESYS Development System to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.2% 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 CODESYS Development System to 3.5.17.0 or a later version.
- Update CODESYS Scripting to 4.1.0.0 or a later version.
- Update Development System to 3.5.17.0 or a later version.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| CODESYS | CODESYS Development System | 3.5.9.0 up to, but not including, 3.5.17.0 | 3.5.17.0 |
| CODESYS | CODESYS Scripting | 4.0.0.0 up to, but not including, 4.1.0.0 | 4.1.0.0 |
| Codesys | Development System | 3.5.9.0 up to, but not including, 3.5.17.0 | 3.5.17.0 |
| Codesys | Scripting | 4.0.0.0 up to, but not including, 4.1.0.0 | 4.1.0.0 |
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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- 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:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (cert.vde.com).
Official description
In CODESYS Development System 3.5.9.0 to 3.5.17.0 and CODESYS Scripting 4.0.0.0 to 4.1.0.0 unsafe directory permissions would allow an attacker with local access to the workstation to place potentially harmful and disguised scripts that could be executed by legitimate users.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Resource to Wrong Sphere
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
More Exposure of Resource to Wrong Sphere vulnerabilities (CWE-668)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cert.vde.com/en/advisories/VDE-2023-024Third Party Advisory
Other vulnerabilities in CODESYS Development System
- 7.0 High severity
- 7.8 High severity
- 7.8 High severity
- 8.8 High severity
- 7.3 High severity
- 7.5 High severity
Recent Exposure of Resource to Wrong Sphere vulnerabilities
- 7.5 High severity
- 7.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 8.1 High severity
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