USN-2431-2: MAAS regression

Ubuntu Security Notice USN-2431-2

4th December, 2014

maas regression

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

  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

USN-2431-1 caused a regression in the MAAS package.

Software description

  • maas
    – Ubuntu MAAS Server

Details

USN-2431-1 fixed vulnerabilities in mod_wsgi. The security update exposed
an issue in the MAAS package, causing a regression. This update fixes the
problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that mod_wsgi incorrectly handled errors when setting up
the working directory and group access rights. A malicious application
could possibly use this issue to cause a local privilege escalation when
using daemon mode.

Update instructions

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

Ubuntu 14.10:
maas-region-controller-min

1.7.0~beta8+bzr3272-0ubuntu1.2
Ubuntu 14.04 LTS:
maas-region-controller-min

1.5.4+bzr2294-0ubuntu1.2
Ubuntu 12.04 LTS:
maas-region-controller

1.2+bzr1373+dfsg-0ubuntu1~12.04.6

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

LP: 1399016

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