USN-2788-1 introduced a regression in unzip.
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.
9 November 2015
A security issue affects these releases of Ubuntu and its derivatives:
USN-2788-1 introduced a regression in unzip.
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)
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon