Bug 237962

Summary: stunnel don't sent client certificate CA names
Product: [Fedora] Fedora Reporter: Peter Bieringer <pb>
Component: stunnelAssignee: Miloslav Trmač <mitr>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: ktmdms
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
URL: http://stunnel.mirt.net/flyspray/?do=details&id=28
Whiteboard:
Fixed In Version: 4.22-1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-03-28 13:54:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Enable sending the client CA list none

Description Peter Bieringer 2007-04-26 11:57:20 UTC 
Description of problem:
During investigation, why thunderbird does not filter the client certificate on
an via stunnel SSL-enabled IMAP server (which requires client certificate
authentication) it was found out, that stunnel don't send client certificate CA
names, while "openssl s_server" does with similar configuration.

This would lead to selection of the client cert on each IMAP connect, e.g.
selecting a subfolder and so on.

Version-Release number of selected component (if applicable):
stunnel-4.15-2
openssl-0.9.8b-8.3.fc6
stunnel-4.20-2 does not improve the situation.

How reproducible:
Always

Steps to Reproduce:

Using stunnel:

client = no
connect = localhost:imap
CAfile = /etc/pki/ca-cert.crt
cert = /etc/pki/server-cert.crt
key = /etc/pki/server-key.pem
ciphers = MEDIUM:HIGH:!ADH:!SSLv2
verify = 2
service = imap-stunnel

openssl s_client shows:

subject=/CN=gatemuc.muc.bieringer.de/C=DE/L=Munich/O=Peter
Bieringer/OU=Gateways/emailAddress=pb
issuer=/CN=Certificate Authority/C=DE/L=Munich/O=Peter Bieringer/OU=Certificate
Authority/emailAddress=pb
---
No client certificate CA names sent
---


Using openssl_server for tests instead with same(!) configuration:

# openssl s_server -accept 993 -cert /etc/pki/server-cert.crt -key
/etc/pki/server-key.pem -CAfile /etc/pki/ca-cert.crt -verify 2


openssl s_client shows:

subject=/CN=gatemuc.muc.bieringer.de/C=DE/L=Munich/O=Peter
Bieringer/OU=Gateways/emailAddress=pb
issuer=/CN=Certificate Authority/C=DE/L=Munich/O=Peter Bieringer/OU=Certificate
Authority/emailAddress=pb
---
Acceptable client certificate CA names
/CN=Certificate Authority/C=DE/L=Munich/O=Peter Bieringer/OU=Certificate
Authority/emailAddress=pb
---


Additional info:

See also discussion on mozilla bugzilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=327001
Comment 1 Miloslav Trmač 2007-04-27 03:16:14 UTC 
Created attachment 153574 [details]
Enable sending the client CA list

Thanks for your report.  Sending of the list was disabled for some reason in
stunnel-4.00, I have asked about the reason on the stunnel list.
Comment 2 Peter Bieringer 2007-04-27 05:36:11 UTC 
If not enabled in the future by default, there should be at least a config
option to enable this by user without recompiling.
Comment 3 Miloslav Trmač 2008-03-28 13:54:13 UTC 
stunnel-4.22, which includes the fix, was built for rawhide.  Thanks again for
your report.