CODESYS Development System: Unprotected Transport of Credentials
CVE-2022-31805 is a high-severity unprotected transport of credentials vulnerability in CODESYS Development System from Codesys, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions V2.3.9.69, V3.5.18.30 as the first without the flaw, so updating CODESYS Development System to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.06% chance of exploitation within 30 days, higher than 65% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update CODESYS Development System to V2.3.9.69 or V3.5.18.30, whichever matches your release line, or a later version.
- Update CODESYS Gateway Client to V2.3.9.38 or a later version.
- Update CODESYS Gateway Server to V2.3.9.38 or a later version.
- Read the advisory on customers.codesys.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 |
|---|---|---|---|
| CODESYS | CODESYS Development System | V2 up to, but not including, V2.3.9.69; V3 up to, but not including, V3.5.18.30 | V2.3.9.69, V3.5.18.30 |
| CODESYS | CODESYS Gateway Client | V2 up to, but not including, V2.3.9.38 | V2.3.9.38 |
| CODESYS | CODESYS Gateway Server | V2 up to, but not including, V2.3.9.38 | V2.3.9.38 |
| CODESYS | CODESYS Web server | V1 up to, but not including, V1.1.9.23 | V1.1.9.23 |
| CODESYS | CODESYS SP Realtime NT | V2 up to, but not including, V2.3.7.30 | V2.3.7.30 |
| CODESYS | CODESYS PLCWinNT | V2 up to, but not including, V2.4.7.57 | V2.4.7.57 |
| CODESYS | CODESYS Runtime Toolkit 32 bit full | V2 up to, but not including, V2.4.7.57 | V2.4.7.57 |
| CODESYS | CODESYS Edge Gateway for Windows | V3 up to, but not including, V3.5.18.30 | V3.5.18.30 |
| CODESYS | CODESYS HMI (SL) | V3 up to, but not including, V3.5.18.30 | V3.5.18.30 |
| CODESYS | CODESYS OPC DA Server SL | V3 up to, but not including, V3.5.18.30 | V3.5.18.30 |
| CODESYS | CODESYS PLCHandler | V3 up to, but not including, V3.5.18.30 | V3.5.18.30 |
| CODESYS | CODESYS Gateway | V3 up to, but not including, V3.5.18.30 | V3.5.18.30 |
| Codesys | Development System | before 2.3.9.69 | 2.3.9.69 |
| Codesys | Edge Gateway | before 3.5.18.30 | 3.5.18.30 |
| Codesys | Gateway | before 2.3.9.38 | 2.3.9.38 |
| Codesys | Hmi Sl | before 3.5.18.30 | 3.5.18.30 |
| Codesys | Opc Server | before 3.5.18.30 | 3.5.18.30 |
| Codesys | Plchandler | before 3.5.18.30 | 3.5.18.30 |
| Codesys | Plcwinnt | before 2.4.7.57 | 2.4.7.57 |
| Codesys | Runtime Toolkit | before 2.4.7.57 | 2.4.7.57 |
| Codesys | Sp Realtime Nt | before 2.3.7.30 | 2.3.7.30 |
| Codesys | Web Server | before 1.1.9.23 | 1.1.9.23 |
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
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (cert.vde.com) |
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 4.3 | Medium | NVD |
Official description
In the CODESYS Development System multiple components in multiple versions transmit the passwords for the communication between clients and servers unprotected.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unprotected Transport of Credentials
Login pages do not use adequate measures to protect the user name and password while they are in transit from the client to the server.
More Unprotected Transport of Credentials vulnerabilities (CWE-523)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
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
- 7.3 High severity
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