Advisory Published

USN-6356-1: OpenDMARC vulnerabilities

First published: Mon Sep 11 2023(Updated: )

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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libopendmarc2<1.3.2-7ubuntu0.1
1.3.2-7ubuntu0.1
=20.04
All of
ubuntu/opendmarc<1.3.2-7ubuntu0.1
1.3.2-7ubuntu0.1
=20.04
All of
ubuntu/libopendmarc2<1.3.2-3ubuntu0.2
1.3.2-3ubuntu0.2
=18.04
All of
ubuntu/opendmarc<1.3.2-3ubuntu0.2
1.3.2-3ubuntu0.2
=18.04
All of
ubuntu/libopendmarc2<1.3.1+dfsg-3ubuntu0.1~esm1
1.3.1+dfsg-3ubuntu0.1~esm1
=16.04
All of
ubuntu/opendmarc<1.3.1+dfsg-3ubuntu0.1~esm1
1.3.1+dfsg-3ubuntu0.1~esm1
=16.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6356-1?

    The severity of USN-6356-1 is medium.

  • How does OpenDMARC handle inputs in USN-6356-1?

    OpenDMARC incorrectly handles certain inputs in USN-6356-1.

  • What is the impact of the vulnerability in USN-6356-1?

    If a user or an automated system receives crafted inputs, an attacker could falsify the domain of an email's origin.

  • Which software versions are affected by USN-6356-1?

    The software versions affected by USN-6356-1 are libopendmarc2 1.3.2-7ubuntu0.1, opendmarc 1.3.2-7ubuntu0.1, libopendmarc2 1.3.2-3ubuntu0.2, opendmarc 1.3.2-3ubuntu0.2, libopendmarc2 1.3.1+dfsg-3ubuntu0.1~esm1, and opendmarc 1.3.1+dfsg-3ubuntu0.1~esm1.

  • How can I fix the vulnerability in USN-6356-1?

    To fix the vulnerability in USN-6356-1, update the libopendmarc2 and opendmarc packages to the specified versions.

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