OpenDMARC: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3439
                    USN-4567-1: OpenDMARC vulnerability
                              6 October 2020

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        AusCERT Security Bulletin Summary
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Product:           OpenDMARC
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service              -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-16378  

Reference:         ESB-2019.3552

Original Bulletin: 
   https://usn.ubuntu.com/4567-1/

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USN-4567-1: OpenDMARC vulnerability
05 October 2020

OpenDMARC could allow signature bypass under certain conditions.
Releases

  o Ubuntu 18.04 LTS

Packages

  o opendmarc - Open Source implementation of the DMARC specification

Details

It was discovered that OpenDMARC is prone to a signature-bypass vulnerability
with multiple "From:" addresses. An attacker could use it to bypass spam and
abuse filters.

Update instructions

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

Ubuntu 18.04

  o libopendmarc2 - 1.3.2-3ubuntu0.1
  o opendmarc - 1.3.2-3ubuntu0.1
  o rddmarc - 1.3.2-3ubuntu0.1

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

References

  o CVE-2019-16378

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