GraceXiaoYa opened a new issue #4849:
URL: https://github.com/apache/cloudstack/issues/4849
##### ISSUE TYPE
* Security Vulnerability
##### Description:
We found a security vulnerability in file
[cloudstack/services/console-proxy/server/src/main/java/com/cloud/consoleproxy/vnc/NoVncClient.java](https://github.com/apache/cloudstack/blob/0f3f2a09370a18301db28ec3d28efe746b6437c9/services/console-proxy/server/src/main/java/com/cloud/consoleproxy/vnc/NoVncClient.java).
The broken cipher DES is used for encryption according to Line 202 and 204.
##### Security Impact:
The DES algorithm is broken. It uses a 56-bits key that is too short to
resist brute-forth attacks.
##### Useful Resources:
https://cwe.mitre.org/data/definitions/327.html
https://link.springer.com/chapter/10.1007/3-540-48071-4_34
##### Solution we suggest:
Replace it with AES cipher algorithm with CBC mode.
##### Please share with us your opinions/comments if there is any:
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