USN-2695-1: HTML Tidy vulnerabilities

29 July 2015

tidy vulnerabilities

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

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


HTML Tidy could be made to crash or run programs if it processed specially crafted data.

Software Description

  • tidy - HTML syntax checker and reformatter


Fernando Muñoz discovered that HTML Tidy incorrectly handled memory. If a user or automated system were tricked into processing specially crafted data, applications linked against HTML Tidy could be made to crash, leading to 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 15.04
libtidy-0.99-0 - 20091223cvs-1.4ubuntu0.1
Ubuntu 14.04 LTS
libtidy-0.99-0 - 20091223cvs-1.2ubuntu1.1
Ubuntu 12.04 LTS
libtidy-0.99-0 - 20091223cvs-1ubuntu2.1

To update your system, please follow these instructions:

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