Hi,

I am currently hunting a SSL problem between iOS 5 devices (iphone,
ipod, ipad) and openssl/libssl 0.9.8.

We are running a dovecot IMAP server under Ubuntu 10.04, offering
SSL-encrypted IMAP. Works stable with all software and devices except
Apple mobile devices with iOS 5. Analyzing network traffic with
Wireshark shows openssl complaining and aborting the connection:



-> TLSv1 Client Hello
<- TLSv1 Server Hello, Certificate, Server Hello Done
-> TLSv1 Client Key Exchange
-> TLSv1 Change Cipher Spec, Encrypted Handshake Message
<- TLSv1 Alert (Level: Fatal, Description: Bad Record MAC)


This smells rather like a bug in iOS, especially since it occurs since
upgrading to iOS 5 and with iOS only, all other clients do work.
Allegedly Apple „fixed” something about SSL in the iOS5 upgrade and
moved to a newer protocol version.

However, this could nevertheless be a problem in openssl.

Have you heard about that problem before?


regards
Hadmut

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