Hi Andy,

I think you're right. I can see the 
file WEB-INF/classes/services/HTTPSandIMAPS-10000001.json in my deployed 
directory.

I will follow the instructions you linked to, to disable this.

Thanks!

Ganesh 

On Thursday, 27 September 2018 19:15:40 UTC+10, Andy Ng wrote:
>
> Hi Ganesh,
>
> There is a default service that will secretly enable all https based 
> service called "HTTPSandIMAPS-10000001.json"
>
> https://github.com/apereo/cas/blob/master/webapp/resources/services/HTTPSandIMAPS-10000001.json
>
> Refer to this to how to disable such service:
>
> https://groups.google.com/a/apereo.org/forum/#!msg/cas-user/yD9WXk3n1K8/Hy0ssGBiAAAJ;context-place=forum/cas-user
>
> See if this is your problem?
>
> Cheers!
> - Andy
>
>
> On Thursday, 27 September 2018 15:49:28 UTC+8, Bergner, Arnold wrote:
>>
>> Hi Ganesh,
>>
>>  
>>
>> when I submit “/login?TARGET=https://yahoo.com” to our cas v5.2, I get 
>> an “application not authorized” error, so no redirection is happening.
>>
>>  
>>
>> Maybe it’s a hole resulting from your service definitions?
>>
>>  
>>
>> Regards,
>>
>> Arnold
>>
>>  
>>
>> *Von:* [email protected] [mailto:[email protected]] *Im Auftrag von 
>> *Ganesh 
>> Prasad
>> *Gesendet:* Donnerstag, 27. September 2018 08:31
>> *An:* CAS Community <[email protected]>
>> *Betreff:* [cas-user] TARGET URL parameter associated with samlValidate 
>> can be misused to redirect to malicious sites (?)
>>
>>  
>>
>> Hi,
>>
>>  
>>
>> We recently commissioned a third-party security audit of our application, 
>> and one of the findings was this:
>>
>>  
>>
>> Cross-Site Redirection (Medium Impact, Moderate Difficulty in exploiting)
>>
>>  
>>
>> If one pastes this string into the browser https://*cas.mydomain.com*
>> /cas/login?TARGET=https://yahoo.com 
>> <https://cas.mydomain.com/cas/login?TARGET=https://yahoo.com>
>>
>>  
>>
>> then, after authentication, the browser is redirected without complaint 
>> to yahoo.com.
>>
>>  
>>
>> The report said in detail:
>>
>>  
>>
>> "The application was found to take a URL as a parameter to determine 
>> where to direct the user. <Consultant> found that this URL can be any value 
>> allowing an attacker to insert a malicious URL that can be used to redirect 
>> to an external site before or after authentication.
>>
>> A link to the login page, containing this URL could therefore be created, 
>> which can then be sent to a victim (e.g. as an email phishing attack). When 
>> the victim accesses this link, they are initially sent to the valid site. 
>> After authentication they can be redirected to a third party site without 
>> their knowledge.
>>
>> This second site could be under the control of an attacker, and perform 
>> such actions as re-requesting their authentication details and performing a 
>> man-in-the-middle attack between the victim and the client's site, 
>> ultimately giving the attacker authenticated access to the application."
>>
>>  
>>
>> My questions are:
>>
>> 1. Is this a security hole in CAS as suggested by the security auditor?
>>
>> 2. Is there a workaround that we can implement?
>>
>>  
>>
>> Regards,
>>
>> Ganesh
>>
>>  
>>
>> -- 
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>> .
>>
>

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