helpGnuTLS - Support: sr #107696, GnuTLS 2.10 client cannot...

 
 

sr #107696: GnuTLS 2.10 client cannot negotiate TLS 1.2 to GnuTLS 2.8 server

Submitted by:  Michael Cronenworth <mooninite>
Submitted on:  Tue 24 May 2011 03:02:55 PM UTC  
 
Category:  Core library Priority:  5 - Normal
Severity:  3 - Normal Status:  Wont Do
Privacy:  Public Assigned to:  Nikos Mavrogiannopoulos <nmav>
Open/Closed:  Closed Operating System:  GNU/Linux

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Tue 24 May 2011 03:49:08 PM UTC, comment #2: 

OK. Thank you for the quick response.

Michael Cronenworth <mooninite>
Tue 24 May 2011 03:38:25 PM UTC, comment #1: 

GnuTLS 2.8 TLS 1.2 support is not complete and disabled by default. GnuTLS 2.10 was the first release that added complete TLS 1.2 support.

Nikos Mavrogiannopoulos <nmav>
Project AdministratorIn charge of this item.
Tue 24 May 2011 03:02:55 PM UTC, original submission:  

Copied from Red Hat Bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=707266

Description of problem:
Fedora 14 server - GnuTLS 2.8.6
Fedora 15 client - GnuTLS 2.10.5

The server is initialized with the following priorities:
"NONE:+VERS-TLS1.2:+AES-256-CBC:+RSA:+SHA1:+COMP-DEFLATE"

When the client attempts to connect the attempt fails with "handshake failed"
as the reason. When I change the server to be:
"NONE:+VERS-TLS1.1:+AES-256-CBC:+RSA:+SHA1:+COMP-DEFLATE"
the connection succeeds. TLS 1.0 also works.

Version-Release number of selected component (if applicable):
gnutls-2.8.6-2.fc14.x86_64
gnutls-2.10.5-1.fc15.x86_64

How reproducible: Always

Steps to Reproduce:
1. Setup GnuTLS 2.8.6 server with the priorities above.
2. Setup GnuTLS 2.10.5 client with the same priorities.
3. Attempt to connect to the server.

Actual results:
Handshake failure.

Expected results:
Connection succeeds.

Additional info:
If I connect to a 2.10.5 server with the 2.10.5 client, it succeeds. It seems
there is some incompatibility between 2.8 and 2.10.

Michael Cronenworth <mooninite>

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2011-08-08 nmav Open/ClosedOpen => Closed
    2011-05-24 nmav StatusNone => Wont Do
        Assigned toNone => nmav

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