[USN-4172-2] file vulnerability

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[USN-4172-2] file vulnerability

Leonidas S. Barbosa
==========================================================================
Ubuntu Security Notice USN-4172-2
October 31, 2019

file vulnerability
==========================================================================

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

file could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- file: Tool to determine file types

Details:

USN-4172-1 fixed a vulnerability in file. This update provides
the corresponding update for Ubuntu 12.04 ESM Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that file incorrectly handled certain malformed 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 14.04 ESM:
  file                            1:5.14-2ubuntu3.4+esm1
  libmagic1                       1:5.14-2ubuntu3.4+esm1

Ubuntu 12.04 ESM:
  file                            5.09-2ubuntu0.8
  libmagic1                       5.09-2ubuntu0.8

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

References:
  https://usn.ubuntu.com/4172-2
  https://usn.ubuntu.com/4172-1
  CVE-2019-18218

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