Ubuntu Security Notice 2370-1 - Guillem Jover discovered that APT incorrectly created a temporary file when handling the changelog command. A local attacker could use this issue to overwrite arbitrary files. In the default installation of Ubuntu, this should be prevented by the kernel link restrictions.
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Ubuntu Security Notice USN-2370-1
October 08, 2014
apt vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
APT could be made to overwrite files.
Software Description:
- apt: Advanced front-end for dpkg
Details:
Guillem Jover discovered that APT incorrectly created a temporary file when
handling the changelog command. A local attacker could use this issue to
overwrite arbitrary files. In the default installation of Ubuntu, this
should be prevented by the kernel link restrictions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
apt 1.0.1ubuntu2.5
Ubuntu 12.04 LTS:
apt 0.8.16~exp12ubuntu10.21
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2370-1
CVE-2014-7206
Package Information:
https://launchpad.net/ubuntu/+source/apt/1.0.1ubuntu2.5
https://launchpad.net/ubuntu/+source/apt/0.8.16~exp12ubuntu10.21