| Article No° | Product Name | Affected Version(s) |
|---|---|---|
| CODESYS Control for BeagleBone SL | < 4.14.0.0 | |
| CODESYS Control for emPC-A/iMX6 SL | < 4.14.0.0 | |
| CODESYS Control for IOT2000 SL | < 4.14.0.0 | |
| CODESYS Control for Linux ARM SL | < 4.14.0.0 | |
| CODESYS Control for Linux SL | < 4.14.0.0 | |
| CODESYS Control for PFC100 SL | < 4.14.0.0 | |
| CODESYS Control for PFC200 SL | < 4.14.0.0 | |
| CODESYS Control for PLCnext SL | < 4.14.0.0 | |
| CODESYS Control for Raspberry Pi SL | < 4.14.0.0 | |
| CODESYS Control for WAGO Touch Panels 600 SL | < 4.14.0.0 | |
| CODESYS Control RTE (for Beckhoff CX) SL | < 3.5.20.30 | |
| CODESYS Control RTE (SL) | < 3.5.20.30 | |
| CODESYS Control Win (SL) | < 3.5.20.30 | |
| CODESYS Embedded Target Visu Toolkit | < 3.5.20.30 | |
| CODESYS HMI (SL) | < 3.5.20.30 | |
| CODESYS Remote Target Visu Toolkit | < 3.5.20.30 | |
| CODESYS Runtime Toolkit | < 3.5.20.30 | |
| CODESYS Virtual Control SL | < 4.14.0.0 |
The CODESYS web server component of the CODESYS Control runtime system is used by the CODESYS WebVisu to display visualization screens in a web browser. Receiving a specifically crafted TLS packet on an HTTPS connection causes the CODESYS web server to crash because the return value of an underlying function is not checked correctly for such unusual conditions.
An unauthenticated remote attacker can causes the CODESYS web server to access invalid memory which results in a DoS.
The CODESYS web server, implemented by the CmpWebServer component, is an optional part of the CODESYS Control runtime system. It is used by the CODESYS WebVisu to display CODESYS visualization screens in a web browser. The CODESYS web server supports both the HTTP and HTTPS protocols. Because the CODESYS web server does not correctly check the return value of an underlying function, it reacts in a wrong way to specifically crafted TLS packets that are received via an HTTPS connection. This causes the CODESYS web server to access invalid memory and the web server task to crash.
Remediation
Update the following products to version 3.5.20.30.
Update the following products to version 4.14.0.0.
The release of version 4.14.0.0 is expected for end of November 2024.
The products available as CODESYS add-ons can be downloaded and installed directly with the CODESYS Installer or be downloaded from the CODESYS Store. Alternatively, as well as for all other products, you will find further information on obtaining the software update in the CODESYS download area.
CERT@VDE coordinated with CODESYS
This issue was reported by ABB.