In multiple CODESYS products, file download and upload function allows access to internal files in the working directory e.g. firmware files of the PLC. All requests are processed on the controller only if no level 1 password is configured on the controller or if remote attacker has previously successfully authenticated himself to the controller. A successful Attack may lead to a denial of service, change of local files, or drain of confidential Information. User interaction is not required
The product makes files or directories accessible to unauthorized actors, even though they should not be.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Plcwinnt | Codesys | 2.0 (including) | 2.4.7.57 (excluding) |
| Runtime_toolkit | Codesys | 2.0 (including) | 2.4.7.57 (excluding) |
Web servers, FTP servers, and similar servers may store a set of files underneath a “root” directory that is accessible to the server’s users. Applications may store sensitive files underneath this root without also using access control to limit which users may request those files, if any. Alternately, an application might package multiple files or directories into an archive file (e.g., ZIP or tar), but the application might not exclude sensitive files that are underneath those directories. In cloud technologies and containers, this weakness might present itself in the form of misconfigured storage accounts that can be read or written by a public or anonymous user.