ESB-2017.2971.2 - UPDATE [Ubuntu] procmail: Execute arbitrary code/commands - Remote with user interaction 2017-11-22

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2017.2971.2
                   Ubuntu patches procmail vulnerability
                             22 November 2017

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

Product:           procmail
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-2017-16844  

Reference:         ESB-2017.2965

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3483-1
   http://www.ubuntu.com/usn/usn-3483-2

Revision History:  November 22 2017: Patched Ubuntu 12.04 ESM
                   November 21 2017: Initial Release

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Ubuntu Security Notice USN-3483-1

20th November, 2017

procmail vulnerability

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

  * Ubuntu 17.10
  * Ubuntu 17.04
  * Ubuntu 16.04 LTS
  * Ubuntu 14.04 LTS

Summary

formail could be made to crash or run programs if it processed specially
crafted mail.

Software description

  * procmail - Versatile e-mail processor

Details

Jakub Wilk discovered that the formail tool incorrectly handled certain
malformed mail messages. An attacker could use this flaw to cause formail
to crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions

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

Ubuntu 17.10:
    procmail 3.22-25ubuntu0.17.10.1
Ubuntu 17.04:
    procmail 3.22-25ubuntu0.17.04.1
Ubuntu 16.04 LTS:
    procmail 3.22-25ubuntu0.16.04.1
Ubuntu 14.04 LTS:
    procmail 3.22-21ubuntu0.2

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

CVE-2017-16844

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