#VU21256 Input validation error in OpenDMARC - CVE-2019-16378
Published: September 21, 2019 / Updated: April 30, 2021
Vulnerability identifier: #VU21256
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-16378
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenDMARC
OpenDMARC
Software vendor:
Trusted Domain Project
Trusted Domain Project
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in OpenDMARC implementation when processing emails with multiple "From:" addresses in a DKIM signed multi-from message. A remote attacker can create a specially crafted email message and bypass signature validation.
Successful exploitation of this vulnerability may allow an attacker to bypass implemented anti-spam measures.
Remediation
Install update from vendor's website.