USN-4567-1: OpenDMARC vulnerability

5 October 2020

OpenDMARC could allow signature bypass under certain conditions.

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Releases

Packages

  • 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 18.04

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

References

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Further reading