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Westermo WeOS Hard-coded Certificate Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Westermo WeOS uses the same SSL private key across different customers installations.
Insight
Insight
The SSL keys used by the switches to provide secure communications are hard coded. Malicious parties could obtain the key, stage a Man-in-the-Middle attack posing to be a WeOS device, and then obtain credentials entered by the end-user. With those credentials, the malicious party would have authenticated access to that device.
Affected Software
Affected Software
WeOS versions older than Version 4.19.0
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Westermo has released a patch that allows changing default certificates to custom certificates.