salt/doc/topics/releases/0.17.1.rst

=========================
Salt 0.17.1 Release Notes
=========================

:release: 2013-10-17

.. note::

    THIS RELEASE IS NOT COMPATIBLE WITH PREVIOUS VERSIONS.  If you update your
    master to 0.17.1, you must update your minions as well.  Sorry for the
    inconvenience -- this is a result of one of the security fixes listed
    below.

The 0.17.1 release comes with a number of improvements to salt-ssh, many
bugfixes, and a number of security updates.

Salt SSH has been improved to be faster, more featureful and more secure.
Since the original release of Salt SSH was primarily a proof of concept, it has
been very exciting to see its rapid adoption. We appreciate the willingness of
security experts to review Salt SSH and help discover oversights and ensure
that security issues only exist for such a tiny window of time.


SSH Enhancements
================

Shell Improvements
------------------

Improvements to Salt SSH's communication have been added that improve routine
execution regardless of the target system's login shell.

Performance
-----------

Deployment of routines is now faster and takes fewer commands to execute.

Security Updates
================

Be advised that these security issues all apply to a small subset of Salt
users and mostly apply to Salt SSH.

Insufficient Argument Validation
--------------------------------

This issue allowed for a user with limited privileges to embed executions
inside of routines to execute routines that should be restricted. This applies
to users using external auth or client ACL and opening up specific routines.

Be advised that these patches address the direct issue. Additional commits have
been applied to help mitigate this issue from resurfacing.

CVE
~~~

CVE-2013-4435

Affected Versions
-----------------

0.15.0 - 0.17.0

Patches
~~~~~~~
https://github.com/saltstack/salt/commit/6d8ef68b605fd63c36bb8ed96122a75ad2e80269
https://github.com/saltstack/salt/commit/ebdef37b7e5d2b95a01d34b211c61c61da67e46a
https://github.com/saltstack/salt/commit/7f190ff890e47cdd591d9d7cefa5126574660824
https://github.com/saltstack/salt/commit/8e5afe59cef6743fe5dbd510dcf463dbdfca1ced
https://github.com/saltstack/salt/commit/aca78f314481082862e96d4f0c1b75fa382bb885
https://github.com/saltstack/salt/commit/6a9752cdb1e8df2c9505ea910434c79d132eb1e2
https://github.com/saltstack/salt/commit/b73677435ba54ecfc93c1c2d840a7f9ba6f53410
https://github.com/saltstack/salt/commit/07972eb0a6f985749a55d8d4a2e471596591c80d
https://github.com/saltstack/salt/commit/1e3f197726aa13ac5c3f2416000089f477f489b5

Found By
~~~~~~~~

Feth Arezki, of Majerti

MITM SSH attack in salt-ssh
---------------------------

SSH host keys were being accepted by default and not enforced on future SSH
connections. These patches set SSH host key checking by default and can be
overridden by passing the -i flag to `salt-ssh`.

CVE
~~~

CVE-2013-4436

Affected Versions
~~~~~~~~~~~~~~~~~

0.17.0

Found By
~~~~~~~~

Michael Scherer, Red Hat

Insecure Usage of /tmp in salt-ssh
----------------------------------

The initial release of salt-ssh used the /tmp directory in an insecure way.
These patches not only secure usage of files under /tmp in salt-ssh, but
also add checksum validation for all packages sent into the now secure
locations on target systems.

CVE
~~~

CVE-2013-4438

Affected Versions
~~~~~~~~~~~~~~~~~

0.17.0

Patches
~~~~~~~
https://github.com/saltstack/salt/commit/aa4bb77ef230758cad84381dde0ec660d2dc340a
https://github.com/saltstack/salt/commit/8f92b6b2cb2e4ec3af8783eb6bf4ff06f5a352cf
https://github.com/saltstack/salt/commit/c58e56811d5a50c908df0597a0ba0b643b45ebfd
https://github.com/saltstack/salt/commit/0359db9b46e47614cff35a66ea6a6a76846885d2
https://github.com/saltstack/salt/commit/4348392860e0fd43701c331ac3e681cf1a8c17b0
https://github.com/saltstack/salt/commit/664d1a1cac05602fad2693f6f97092d98a72bf61
https://github.com/saltstack/salt/commit/bab92775a576e28ff9db262f32db9cf2375bba87
https://github.com/saltstack/salt/commit/c6d34f1acf64900a3c87a2d37618ff414e5a704e

Found By
~~~~~~~~

Michael Scherer, Red Hat

YAML Calling Unsafe Loading Routine
-----------------------------------

It has been argued that this is not a valid security issue, as the YAML loading
that was happening was only being called after an initial gateway filter in
Salt has already safely loaded the YAML and would fail if non-safe routines
were embedded. Nonetheless, the CVE was filed and patches applied.

CVE
~~~

CVE-2013-4438

Patches
-------
https://github.com/saltstack/salt/commit/339b0a51befae6b6b218ebcb55daa9cd3329a1c5

Found By
~~~~~~~~

Michael Scherer, Red Hat

Failure to Drop Supplementary Group on Salt Master
--------------------------------------------------

If a salt master was started as a non-root user by the root user, root's
groups would still be applied to the running process. This fix changes the
process to have only the groups of the running user.

CVE
~~~

CVE not considered necessary by submitter.

Affected Versions
~~~~~~~~~~~~~~~~~

0.11.0 - 0.17.0

Patches
~~~~~~~
https://github.com/saltstack/salt/commit/b89fa9135822d029795ab1eecd68cce2d1ced715

Found By
~~~~~~~~

Michael Scherer, Red Hat

Failure to Validate Minions Posting Data
----------------------------------------

This issue allowed a minion to pose as another authorized minion when posting
data such as the mine data. All minions now pass through the id challenge
before posting such data.

CVE
~~~

CVE-2013-4439

Affected Versions
~~~~~~~~~~~~~~~~~

0.15.0 - 0.17.0

Patches
-------
https://github.com/saltstack/salt/commit/7b850ff3d07ef6782888914ac4556c01e8a1c482
https://github.com/saltstack/salt/commit/151759b2a1e1c6ce29277aa81b054219147f80fd

Found By
~~~~~~~~

David Anderson

Fix Reference
=============

Version 0.17.1 is the first bugfix release for :doc:`0.17.0
</topics/releases/0.17.0>`.  The changes include:

- Fix symbolic links in thin.tgz (:issue:`7482`)
- Pass env through to file.patch state (:issue:`7452`)
- Service provider fixes and reporting improvements (:issue:`7361`)
- Add ``--priv`` option for specifying salt-ssh private key
- Fix salt-thin's salt-call on setuptools installations (:issue:`7516`)
- Fix salt-ssh to support passwords with spaces (:issue:`7480`)
- Fix regression in wildcard includes (:issue:`7455`)
- Fix salt-call outputter regression (:issue:`7456`)
- Fix custom returner support for startup states (:issue:`7540`)
- Fix value handling in augeas (:issue:`7605`)
- Fix regression in apt (:issue:`7624`)
- Fix minion ID guessing to use ``socket.getfqdn()`` first (:issue:`7558`)
- Add minion ID caching (:issue:`7558`)
- Fix salt-key race condition (:issue:`7304`)
- Add ``--include-all`` flag to salt-key (:issue:`7399`)
- Fix custom grains in pillar (part of :issue:`5716`, :issue:`6083`)
- Fix race condition in salt-key (:issue:`7304`)
- Fix regression in minion ID guessing, prioritize ``socket.getfqdn()``
  (:issue:`7558`)
- Cache minion ID on first guess (:issue:`7558`)
- Allow trailing slash in ``file.directory`` state
- Fix reporting of file_roots in pillar return (:issue:`5449` and
  :issue:`5951`)
- Remove pillar matching for mine.get (:issue:`7197`)
- Sanitize args for multiple execution modules
- Fix yumpkg mod_repo functions to filter hidden args (:issue:`7656`)
- Fix conflicting IDs in state includes (:issue:`7526`)
- Fix mysql_grants.absent string formatting issue (:issue:`7827`)
- Fix postgres.version so it won't return None (:issue:`7695`)
- Fix for trailing slashes in mount.mounted state
- Fix rogue AttributErrors in the outputter system (:issue:`7845`)
- Fix for incorrect ssh key encodings resulting in incorrect key added
  (:issue:`7718`)
- Fix for pillar/grains naming regression in python renderer (:issue:`7693`)
- Fix args/kwargs handling in the scheduler (:issue:`7422`)
- Fix logfile handling for `file://`, `tcp://` and `udp://` (:issue:`7754`)
- Fix error handling in config file parsing (:issue:`6714`)
- Fix RVM using sudo when running as non-root user (:issue:`2193`)
- Fix client ACL and underlying logging bugs (:issue:`7706`)
- Fix scheduler bug with returner (:issue:`7367`)
- Fix user management bug related to default groups (:issue:`7690`)
- Fix various salt-ssh bugs (:issue:`7528`)
- Many various documentation fixes