CVE-2019-16378 Security feature bypass in n/a

Critical 9.8 Published Updated

Attackers can bypass DMARC signature checks using multiple From addresses, potentially spoofing email origins in systems relying on this validation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2019-16378?

CVE-2019-16378 is a critical vulnerability in Canonical Ubuntu Linux, published on 17 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.

Weakness: CWE-290

Which versions are affected by CVE-2019-16378?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Trusteddomain Opendmarc.

How do I fix CVE-2019-16378?

Apply the vendor's patch.

Is CVE-2019-16378 being exploited?

There is no known exploitation of CVE-2019-16378 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-16378, DSA-4526-1, GHSA-x9f6-xw7x-fm76, UBUNTU-CVE-2019-16378, USN-4567-1.

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