Operating System:

[Ubuntu]

Published:

01 November 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.4038.2
                      USN-4172-1: file vulnerability
                              1 November 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           file
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-18218  

Reference:         ESB-2019.3961
                   ESB-2019.3935

Original Bulletin: 
   https://usn.ubuntu.com/4172-1/
   https://usn.ubuntu.com/4172-2/

Comment: This bulletin contains two (2) Ubuntu security advisories.

Revision History:  November  1 2019: Updates for Ubuntu 12.04 and 14.04 ESM
                   October  31 2019: Initial Release

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USN-4172-1: file vulnerability
30 October 2019

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

  o Ubuntu 19.10
  o Ubuntu 19.04
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

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

Software Description

  o file - Tool to determine file types

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 19.10
    file - 1:5.37-5ubuntu0.1
    libmagic1 - 1:5.37-5ubuntu0.1
Ubuntu 19.04
    file - 1:5.35-4ubuntu0.1
    libmagic1 - 1:5.35-4ubuntu0.1
Ubuntu 18.04 LTS
    file - 1:5.32-2ubuntu0.3
    libmagic1 - 1:5.32-2ubuntu0.3
Ubuntu 16.04 LTS
    file - 1:5.25-2ubuntu1.3
    libmagic1 - 1:5.25-2ubuntu1.3

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2019-18218

- ---

USN-4172-2: file vulnerability
31 October 2019

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

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

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

Software Description

  o 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

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o USN-4172-1
  o CVE-2019-18218

- --------------------------END INCLUDED TEXT--------------------

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