ESB-2017.2230 - [Win][UNIX/Linux][Ubuntu] Bazaar: Execute arbitrary code/commands - Remote with user interaction 2017-09-06

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2230
                           Bazaar vulnerability
                             6 September 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Bazaar
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3411-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running Bazaar check for an updated version of the software for 
         their operating system.

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Ubuntu Security Notice USN-3411-1
September 06, 2017

bzr vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

Bazaar could be made run programs as your login if it opened a
specially crafted URL.

Software Description:
- - bzr: easy to use distributed version control system

Details:

Adam Collard discovered that Bazaar did not properly handle host names
in 'bzr+ssh://' URLs. A remote attacker could use this to construct
a bazaar repository URL that when accessed could run arbitrary code
with the privileges of the user.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
  bzr                             2.7.0+bzr6619-7ubuntu0.1
  python-bzrlib                   2.7.0+bzr6619-7ubuntu0.1

Ubuntu 16.04 LTS:
  bzr                             2.7.0-2ubuntu3.1
  python-bzrlib                   2.7.0-2ubuntu3.1

Ubuntu 14.04 LTS:
  bzr                             2.6.0+bzr6593-1ubuntu1.6
  python-bzrlib                   2.6.0+bzr6593-1ubuntu1.6

In general, a standard system update will make all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3411-1
  https://launchpad.net/bugs/1710979

Package Information:
  https://launchpad.net/ubuntu/+source/bzr/2.7.0+bzr6619-7ubuntu0.1
  https://launchpad.net/ubuntu/+source/bzr/2.7.0-2ubuntu3.1
  https://launchpad.net/ubuntu/+source/bzr/2.6.0+bzr6593-1ubuntu1.6

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