#VU34419 Authentication Bypass by Spoofing in OpenDMARC - CVE-2020-12272
Published: April 27, 2020 / Updated: April 30, 2021
Vulnerability identifier: #VU34419
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-2020-12272
CWE-ID: CWE-290
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 non-authenticated attacker to manipulate data.
OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
Remediation
Install update from vendor's website.