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Ubuntu 17.04 USN-3411-1: Risk of Code Execution in Bazaar Software

ubuntu
Calendar Grey September 6, 2017
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-3411-2 outlines a vulnerability in Bazaar that could enable remote code execution via specially crafted links.
Bazaar could be made run programs as your login if it opened aspecially crafted URL.

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.

Topics%20covered

Topics Covered

security advisory code execution remote code execution ubuntu bzr

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://ubuntu.com/security/notices/USN-3411-1

https://bugs.launchpad.net/bzr/+bug/1710979

Severity
critical
Lowest
Low
Medium
High
Critical

September 06, 2017

Topics%20covered

Topics Covered

security advisory code execution remote code execution ubuntu bzr

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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