Ubuntu Security Notice USN-3288-1
15th May, 2017
A security issue affects these releases of Ubuntu and its
- Ubuntu 14.04 LTS
libytnef could be made to crash or run programs as your login if it opened
a specially crafted file.
– improved decoder for application/ms-tnef attachments
It was discovered that libytnef incorrectly handled malformed TNEF streams.
If a user were tricked into opening a specially crafted TNEF attachment, an
attacker could cause a denial of service or possibly execute arbitrary
The problem can be corrected by updating your system to the following
To update your system, please follow these instructions:
After a standard system update you need to restart applications using
libytnef, such as Evolution, to make all the necessary changes.