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Certificate error found for an app when iOS version is different

Using the same certificate on both versions,  app is running successfully on iOS version 10.x and no certificate error is found but the same app on iOS version 11.x throws  certificate trust error. Besides, we have not made any modifications in the code recently and code for both the apps is same.

 

Please find below the details of error and successful information w.r.t iOS versions and the same screenshot is attached as well

 

In iOS version 10.3.3 --> No certificate error

Connection is trusted

Server's certificate is valid and its identity has been verified by a trusted third-party authority.

 

In iOS version 11.2.5 --> certificate error found

Your Information might be at risk

Server certificate is not verified by a certificate authority. Be careful if you're printing sensitive information. Contact your IT administrator to confirm this security exceptio

Contributor II

Re: Certificate error found for an app when iOS version is different

Hi,

 

iOS 11 makes some significant changes to the way that it handles certificates.

 

https://support.apple.com/en-au/HT207828

 

thank you,

ACCP ACMP CWDP CWSP
Guru Elite

Re: Certificate error found for an app when iOS version is different

It's likely a SHA-1 cert which Apple will now mark as untrusted.

Tim Cappalli | Aruba Security
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480
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