Operating System:

[Ubuntu]

Published:

27 January 2021

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0288
                      USN-4703-1: Mutt vulnerability
                              27 January 2021

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

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

Product:           mutt
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-3181  

Reference:         ESB-2021.0280
                   ESB-2021.0237

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-4703-1

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USN-4703-1: Mutt vulnerability
25 January 2021

Mutt could be made to denial of service if it received a specially
crafted email message.
Releases

  o Ubuntu 20.10
  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Packages

  o mutt - text-based mailreader supporting MIME, GPG, PGP and threading

Details

It was discovered that Mutt incorrectly handled certain email messages.
An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 20.10

  o mutt - 1.14.6-1ubuntu0.2

Ubuntu 20.04

  o mutt - 1.13.2-1ubuntu0.4

Ubuntu 18.04

  o mutt - 1.9.4-3ubuntu0.5

Ubuntu 16.04

  o mutt - 1.5.24-1ubuntu0.6

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

References

  o CVE-2021-3181

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

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