Bug#720774: cyrus-imapd-2.4 does not allow WIndows 8 to connect to imaps while TLSv1.2 is used

Дениска-редиска slim at inbox.lv
Sun Aug 25 11:14:58 UTC 2013


Package: cyrus-imapd-2.4
Version: 2.4.16-4+deb7u1

Default installation of Windows 8 cannot initiate SSL connection to imaps due incompatibility in TLSv1.2 protocol. 

Aug 25 13:55:47 test cyrus/imaps[17725]: SSL_accept() incomplete -> wait
Aug 25 13:55:47 test cyrus/imaps[17725]: EOF in SSL_accept() -> fail
Aug 25 13:55:47 test cyrus/imaps[17725]: imaps TLS negotiation failed: [xx.xx.xx.xxx]
Aug 25 13:55:47 test cyrus/imaps[17725]: Fatal error: tls_start_servertls() failed

Disabling TLSv1.2 (enabled by default) in Windows 8 forces TLSv1.1 to be used and it works.

cyrus-imapd-2.4 does not allow to disable specific SSL protocol version and does not allow windows 8 to 
handshake when TLSv1.2 is used. 

I am using Debian GNU/Linux 7.1, linux-image-3.2.0-4-686-pae-3.2.46-1, libc6:i386-2.13-38, openssl-1.0.1e-2



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