==========================================================================
Ubuntu Security Notice USN-2788-2
November 09, 2015
unzip regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 15.10
– Ubuntu 15.04
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
Summary:
USN-2788-1 introduced a regression in unzip.
Software Description:
– unzip: De-archiver for .zip files
Details:
USN-2788-1 fixed vulnerabilities in unzip. One of the security patches
caused a regression when extracting 0-byte files. This update fixes the
problem.
We apologize for the inconvenience.
Original advisory details:
Gustavo Grieco discovered that unzip incorrectly handled certain password
protected archives. If a user or automated system were tricked into
processing a specially crafted zip archive, an attacker could possibly
execute arbitrary code. (CVE-2015-7696)
Gustavo Grieco discovered that unzip incorrectly handled certain malformed
archives. If a user or automated system were tricked into processing a
specially crafted zip archive, an attacker could possibly cause unzip to
hang, resulting in a denial of service. (CVE-2015-7697)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.10:
unzip 6.0-17ubuntu1.2
Ubuntu 15.04:
unzip 6.0-13ubuntu3.2
Ubuntu 14.04 LTS:
unzip 6.0-9ubuntu1.5
Ubuntu 12.04 LTS:
unzip 6.0-4ubuntu2.5
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2788-2
http://www.ubuntu.com/usn/usn-2788-1
https://launchpad.net/bugs/1513293
Package Information:
https://launchpad.net/ubuntu/+source/unzip/6.0-17ubuntu1.2
https://launchpad.net/ubuntu/+source/unzip/6.0-13ubuntu3.2
https://launchpad.net/ubuntu/+source/unzip/6.0-9ubuntu1.5
https://launchpad.net/ubuntu/+source/unzip/6.0-4ubuntu2.5
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