Ubuntu Security Notice USN-3356-1
19th July, 2017
A security issue affects these releases of Ubuntu and its
- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Expat could be made to hang if it received specially crafted input.
– XML parsing C library
It was discovered that Expat incorrectly handled certain external entities.
A remote attacker could possibly use this issue to cause Expat to hang,
resulting in a denial of service.
The problem can be corrected by updating your system to the following
- Ubuntu 17.04:
- Ubuntu 16.10:
- Ubuntu 16.04 LTS:
- Ubuntu 14.04 LTS:
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes.