USN-6356-1: OpenDMARC vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• opendmarc - Open Source implementation of the DMARC specification

Details

Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC
incorrectly handled certain inputs. If a user or an automated system were
tricked into receiving crafted inputs, an attacker could possibly use this
to falsify the domain of an e-mails origin. (CVE-2020-12272)

Patrik Lantz discovered that OpenDMARC incorrectly handled certain inputs.
If a user or an automated system were tricked into opening a specially
crafted input file, a remote attacker could possibly use this issue to
cause a denial of service. (CVE-2020-12460)

Update instructions

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

Ubuntu 20.04

• libopendmarc2 - 1.3.2-7ubuntu0.1
• opendmarc - 1.3.2-7ubuntu0.1

Ubuntu 18.04

• libopendmarc2 - 1.3.2-3ubuntu0.2
• opendmarc - 1.3.2-3ubuntu0.2

Ubuntu 16.04

• libopendmarc2 - 1.3.1+dfsg-3ubuntu0.1~esm1
  Available with Ubuntu Pro
• opendmarc - 1.3.1+dfsg-3ubuntu0.1~esm1
  Available with Ubuntu Pro

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

References

• CVE-2020-12460
• CVE-2020-12272