The host is installed with zlib dependencies through 1:1.2.8.dfsg-2ubuntu4.1 on Ubuntu 16.04, through 1:1.2.8.dfsg-1ubuntu1 on Ubuntu 14.04, through 1:1.2.8.dfsg-2ubuntu5.1 on Ubuntu 16.10 or through 1:1.2.11.dfsg-0ubuntu1 on Ubuntu 12.04 and is prone to a denial of service vulnerability. A flaw is present in scripts, which fails to properly handle unspecified vectors. Successful exploitation could allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.