Description
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Schneider Electric Modicon PLCs | Schneider Electric Modicon PLCs | — |
Advisories 1
- ICSA-17-089-02 Schneider Electric Modicon PLCs CISA ICS & IT advisories · Mar 30, 2017