Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Ubuntu 15.04 & 14.04 LTS USN-2746-2 Critical: Fix Simple Streams Regression

ubuntu
Calendar Grey September 25, 2015
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
USN-2746-1 introduced a regression in Simple Streams.

Summary

USN-2746-1 introduced a regression in Simple Streams.

Software Description:

- simplestreams: Library and tools for using Simple Streams data

Details:

USN-2746-1 fixed a vulnerability in Simple Streams. The update caused a

regression preventing MAAS from downloading PXE images. This update fixes

the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Simple Streams did not properly perform gpg

verification in some situations. A remote attacker could use this to

perform a man-in-the-middle attack and inject malicious content into

the stream.

Topics%20covered

Topics Covered

security advisory security issue update instructions ubuntu man-in-the-middle regression fix simplestreams

Update Instructions

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

Ubuntu 15.04:
  python-simplestreams            0.1.0~bzr354-0ubuntu1.15.04.2
  python-simplestreams-openstack  0.1.0~bzr354-0ubuntu1.15.04.2
  python3-simplestreams           0.1.0~bzr354-0ubuntu1.15.04.2
  simplestreams                   0.1.0~bzr354-0ubuntu1.15.04.2

Ubuntu 14.04 LTS:
  python-simplestreams            0.1.0~bzr341-0ubuntu2.3
  python-simplestreams-openstack  0.1.0~bzr341-0ubuntu2.3
  python3-simplestreams           0.1.0~bzr341-0ubuntu2.3
  simplestreams                   0.1.0~bzr341-0ubuntu2.3

After a standard system update you need to restart any services that
make use of python-simplestreams or python3-simplestreams to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2746-2

https://ubuntu.com/security/notices/USN-2746-1

https://bugs.launchpad.net/maas/+bug/1499749

Severity
critical
Lowest
Low
Medium
High
Critical

September 25, 2015

Topics%20covered

Topics Covered

security advisory security issue update instructions ubuntu man-in-the-middle regression fix simplestreams

Package Information

https://launchpad.net/ubuntu/+source/simplestreams/0.1.0~bzr354-0ubuntu1.15.04.2
https://launchpad.net/ubuntu/+source/simplestreams/0.1.0~bzr341-0ubuntu2.3

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.