USN-3911-1: file vulnerabilities

18 March 2019

file vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Several security issues were fixed in file.

Software Description

  • file - Tool to determine file types


It was discovered that file incorrectly handled certain malformed ELF files. An attacker could use this issue to cause 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 18.10
file - 1:5.34-2ubuntu0.1
libmagic1 - 1:5.34-2ubuntu0.1
Ubuntu 18.04 LTS
file - 1:5.32-2ubuntu0.2
libmagic1 - 1:5.32-2ubuntu0.2
Ubuntu 16.04 LTS
file - 1:5.25-2ubuntu1.2
libmagic1 - 1:5.25-2ubuntu1.2

To update your system, please follow these instructions:

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