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Ubuntu Security Notice USN-3686-1
June 14, 2018

file vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in file.

Software Description:
- file: Tool to determine file types

Details:

Alexander Cherepanov discovered that file incorrectly handled a large
number of notes. An attacker could use this issue to cause a denial of
service. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-9620)

Alexander Cherepanov discovered that file incorrectly handled certain long
strings. An attacker could use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS. (CVE-2014-9620)

Alexander Cherepanov 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. This issue only affected
Ubuntu 14.04 LTS. (CVE-2014-9653)

It was discovered that file incorrectly handled certain magic files. An
attacker could use this issue with a specially crafted magic file to cause
a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 14.04 LTS. (CVE-2015-8865)

It was discovered that file incorrectly handled certain malformed ELF
files. An attacker could use this issue to cause a denial of service.
(CVE-2018-10360)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  file                            1:5.32-2ubuntu0.1
  libmagic1                       1:5.32-2ubuntu0.1

Ubuntu 17.10:
  file                            1:5.32-1ubuntu0.1
  libmagic1                       1:5.32-1ubuntu0.1

Ubuntu 16.04 LTS:
  file                            1:5.25-2ubuntu1.1
  libmagic1                       1:5.25-2ubuntu1.1

Ubuntu 14.04 LTS:
  file                            1:5.14-2ubuntu3.4
  libmagic1                       1:5.14-2ubuntu3.4

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

References:
  https://usn.ubuntu.com/usn/usn-3686-1
  CVE-2014-9620, CVE-2014-9621, CVE-2014-9653, CVE-2015-8865,
  CVE-2018-10360

Package Information:
  https://launchpad.net/ubuntu/+source/file/1:5.32-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/file/1:5.32-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/file/1:5.25-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/file/1:5.14-2ubuntu3.4