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Bug 1080142

Summary: m2crypto does not support subject alternative name with IP address
Product: Red Hat Enterprise Linux 7 Reporter: Alicja Kario <hkario>
Component: m2cryptoAssignee: Miloslav Trmač <mitr>
Status: CLOSED ERRATA QA Contact: Stanislav Zidek <szidek>
Severity: low Docs Contact:
Priority: low    
Version: 7.0CC: ksrot, mitr
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
URL: https://github.com/martinpaljak/M2Crypto/issues/19
Whiteboard:
Fixed In Version: m2crypto-0.21.1-17.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1284927 (view as bug list) Environment:
Last Closed: 2015-11-19 12:58:25 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1284927    

Description Alicja Kario 2014-03-24 18:25:29 UTC 
Description of problem:
When m2crypto client connects to a server specified only by IP address, the verification of certificate fails

Version-Release number of selected component (if applicable):
m2crypto-0.21.1-14.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Create a CA and sing certificate with SAN pointing to 127.0.0.1
2. Start s_server with the certificate
3. connect to local s_server using 127.0.0.1 as the hostname

Actual results:
LOOP: SSL connect: before/connect initialization
LOOP: SSL connect: SSLv2/v3 write client hello A
LOOP: SSL connect: SSLv3 read server hello A
LOOP: SSL connect: SSLv3 read server certificate A
LOOP: SSL connect: SSLv3 read server key exchange A
LOOP: SSL connect: SSLv3 read server done A
LOOP: SSL connect: SSLv3 write client key exchange A
LOOP: SSL connect: SSLv3 write change cipher spec A
LOOP: SSL connect: SSLv3 write finished A
LOOP: SSL connect: SSLv3 flush data
LOOP: SSL connect: SSLv3 read server session ticket A
LOOP: SSL connect: SSLv3 read finished A
INFO: SSL connect: SSL negotiation finished successfully
Traceback (most recent call last):
  File "sni.py", line 48, in <module>
    s.connect((host, port))
  File "/usr/lib64/python2.7/site-packages/M2Crypto/SSL/Connection.py", line 188, in connect
    if not check(self.get_peer_cert(), self.addr[0]):
  File "/usr/lib64/python2.7/site-packages/M2Crypto/SSL/Checker.py", line 98, in __call__
    fieldName='subjectAltName')
M2Crypto.SSL.Checker.WrongHost: Peer certificate subjectAltName does not match host, expected 127.0.0.1, got DNS:wronghostname.com, DNS:example.com, DNS:evenmoreincorrectname.com, IP Address:127.0.0.1
ALERT: write: warning: close notify

Expected results:
Successful connection to server

Additional info:
Comment 1 Miloslav Trmač 2014-03-24 23:19:23 UTC 
Thanks for the report.  File upstream as well for reference.
Comment 2 Miloslav Trmač 2014-03-24 23:20:24 UTC 
(In reply to Miloslav Trmač from comment #1)
> File upstream as well for reference.

"Filed upstream", sorry.
Comment 11 errata-xmlrpc 2015-11-19 12:58:25 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2165.html