USN-2338-1: Lua vulnerability

3 September 2014

lua5.1 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Lua could be made to crash or run programs.

Software Description

  • lua5.1 - Simple, extensible, embeddable programming language


It was discovered that Lua incorrectly handled certain vararg functions with a large number of fixed parameters. An attacker could use this issue to cause Lua applications to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
liblua5.1-0 - 5.1.5-5ubuntu0.1
lua5.1 - 5.1.5-5ubuntu0.1
Ubuntu 12.04 LTS
liblua5.1-0 - 5.1.4-12ubuntu1.1
lua5.1 - 5.1.4-12ubuntu1.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.