Home / vulnerabilities Ubuntu Security Notice USN-1215-1
Posted on 25 September 2011
Source : packetstormsecurity.org Link
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Ubuntu Security Notice USN-1215-1
September 22, 2011
apt vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary:
An attacker could trick APT into installing altered packages.
Software Description:
- apt: Advanced front-end for dpkg
Details:
It was discovered that the apt-key utility incorrectly verified GPG
keys when downloaded via the net-update option. If a remote attacker were
able to perform a man-in-the-middle attack, this flaw could potentially be
used to install altered packages. This update corrects the issue by
disabling the net-update option completely. A future update will re-enable
the option with corrected verification.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
apt 0.8.13.2ubuntu4.2
Ubuntu 10.10:
apt 0.8.3ubuntu7.2
Ubuntu 10.04 LTS:
apt 0.7.25.3ubuntu9.7
Ubuntu 8.04 LTS:
apt 0.7.9ubuntu17.3
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1215-1
https://launchpad.net/bugs/856489
Package Information:
https://launchpad.net/ubuntu/+source/apt/0.8.13.2ubuntu4.2
https://launchpad.net/ubuntu/+source/apt/0.8.3ubuntu7.2
https://launchpad.net/ubuntu/+source/apt/0.7.25.3ubuntu9.7
https://launchpad.net/ubuntu/+source/apt/0.7.9ubuntu17.3
