An issue has been found in unzip, a de-archiver for .zip files. While processing a password protected archive, a heap-based buffer overflow could happen, that allows an attacker to perform a denial of service or to possibly achieve code execution.
For Debian 7 Wheezy, these problems have been fixed in version 6.0-8+deb7u9.
We recommend that you upgrade your unzip packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/