[Bug 743858] Re: sshd not appending to /var/log/btmp

[Chris J Arges]

@laney, I verified that in precise/saucy/trusty /var/log/btmp is set to
0660. With that and Colin's comment in #5, I think these do make sense.

-- 
You received this bug notification because you are a member of Ubuntu
Sponsors Team, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/743858

Title:
  sshd not appending to /var/log/btmp

Status in “openssh” package in Ubuntu:
  Fix Released
Status in “openssh” source package in Precise:
  In Progress
Status in “openssh” source package in Saucy:
  In Progress
Status in “openssh” source package in Trusty:
  Fix Released

Bug description:
  SRU justification :
  btmp logging had been removed in Debian a while ago due to protection to the /var/log/btmp file. This restriction is no longer true so it has been re-enabled on Debian.

  Impact : 
  Failure to login using ssh will be recorded in /var/log/btmp.

  Fix : 
  Change compilation time option

  Test Case : 
  $ ssh badname at localhost # hit 'enter' three times to fail logging in.
  $ sudo lastb

  Expected outcome:
  "lastb" reports something similar to:
  "badname    ssh:pts/1    localhost    Sun Mar 27 17:01 - 17:01 (04:00)"
  just as it does when a bad login attempt is made using /bin/login, or when using sshd on other distributions of linux (CentOS, Fedora, Arch, SUSE, ...etc)

  Actual outcome
  No mention of a bad login attempt in lastb output; /var/log/btmp modify time and byte size is unchanged.

  Regression : 
  None expected, this used to be the default before it got disabled.

  Original description of the problem :

  Steps to reproduce:
  $ ssh badname at localhost # hit 'enter' three times to fail logging in.
  $ sudo lastb

  Expected outcome:
  "lastb" reports something similar to:
  "badname    ssh:pts/1    localhost    Sun Mar 27 17:01 - 17:01 (04:00)"
  just as it does when a bad login attempt is made using /bin/login, or when using sshd on other distributions of linux (CentOS, Fedora, Arch, SUSE, ...etc)

  Actual outcome
  No mention of a bad login attempt in lastb output; /var/log/btmp modify time and byte size is unchanged.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: openssh-server 1:5.3p1-3ubuntu6
  Uname: Linux 2.6.18-128.2.1.el5.028stab064.7 x86_64
  Architecture: amd64
  Date: Sun Mar 27 16:40:55 2011
  ProcEnviron:
   LANGUAGE=en_US.UTF-8
   LC_CTYPE=C
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: openssh

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/743858/+subscriptions