# Salt 0.17.1 Release Notes

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 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

Current Salt release: 0.17.1

### Table Of Contents

- Salt 0.17.1 Release Notes
  - SSH Enhancements
    - Shell Improvements
    - Performance
  - Security Updates
    - Insufficient Argument Validation
      - CVE
    - Affected Versions
      - Patches
      - Found By
    - MITM SSH attack in salt-ssh
      - CVE
      - Affected Versions
      - Found By
    - Insecure Usage of /tmp in salt-ssh
      - CVE
      - Affected Versions
      - Patches
      - Found By
    - YAML Calling Unsafe Loading Routine
      - CVE
    - Patches
      - Found By
    - Failure to Drop Supplementary Group on Salt Master
      - CVE
      - Affected Versions
      - Patches
      - Found By
    - Failure to Validate Minions Posting Data
      - CVE
      - Affected Versions
    - Patches
      - Found By
  - Fix Reference

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