CVE-2017-6028
CriticalSummary
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs M241 and M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding, making them susceptible to sniffing.
Risk Assessment
Sniffed credentials could then be used to log into the web application, posing a serious security threat to the system.
Recommendation
It is recommended to implement stronger encryption for credentials and to monitor network traffic for potential sniffing attempts.
Original NVD description (English source)
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.