[Bug 1576799] Re: Regression: 2:4.3.8+dfsg-0ubuntu0.14.04.2 Failed to Issue the StartTLS instruction

[Arjit]

It seems that i am not able to add ppa properly to my system.
Thus required changes are not getting reflected. 
I have done below:-
Manually copy below lines to /etc/apt/sources.list

/etc/apt# grep -r "ahasenack" sources.list
deb http://ppa.launchpad.net/ahasenack/samba-tls-regression-1576799/ubuntu xenial main
deb-src http://ppa.launchpad.net/ahasenack/samba-tls-regression-1576799/ubuntu xenial main

run apt-get update:-

apt-get update
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Hit:2 http://in.archive.ubuntu.com/ubuntu xenial InRelease
Hit:3 http://ppa.launchpad.net/ahasenack/samba-tls-regression-1576799/ubuntu xenial InRelease
Get:4 http://in.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:5 http://in.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Fetched 306 kB in 1s (182 kB/s)
Reading package lists... Done

It seems that required code changes are part of libads library.
I have checked mine /usr/lib/x86_64-linux-gnu/samba/libads.so.0 it is not updated.

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https://bugs.launchpad.net/bugs/1576799

Title:
  Regression: 2:4.3.8+dfsg-0ubuntu0.14.04.2 Failed to Issue the StartTLS
  instruction

Status in samba package in Ubuntu:
  Confirmed

Bug description:
  With the recent samba upgrade to 2:4.3.8+dfsg-0ubuntu0.14.04.2, we
  were seeing regression with authentication:

  /var/log/syslog
  Apr 28 17:45:52 hostname winbindd[769]: [2016/04/28 17:45:52.415470,  0] ../source3/lib/smbldap.c:575(smbldap_start_tls)
  Apr 28 17:45:52 hostname winbindd[769]:   Failed to issue the StartTLS instruction: Connect error
  Apr 28 17:45:52 hostname winbindd[769]: [2016/04/28 17:45:52.898408,  0] ../source3/lib/smbldap.c:575(smbldap_start_tls)
  Apr 28 17:45:52 hostname winbindd[769]:   Failed to issue the StartTLS instruction: Connect error

  
  We had to rollback to: 2:4.1.6+dfsg-1ubuntu2.14.04.13 and everything worked again.

  Here's a basic samba config that reproduces the issue:

  Perfectly reproducible with this:
    realm = AD.DOMAIN.COM
    security = ads
    ldap ssl = start_tls
    ldap ssl ads = yes

  [LDAP] TLS: hostname (172.12.12.12) does not match common name in certificate (hostname).
  [LDAP] ldap_err2string
  Failed to issue the StartTLS instruction: Connect error

  Samba seems to construct the LDAP URL with the IP of the AD controller
  in it instead of the hostname and then because our ldap.conf requires
  it, the server cert validation fails

  Please let me know if there are any other logs I can provide

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