CVE-2019-20790 is a critical vulnerability affecting OpenDMARC (through 1.3.2 and 1.4.x) when integrated with pypolicyd-spf 2.0.2. This flaw allows attackers to bypass SPF and DMARC authentication mechanisms by exploiting inconsistencies between the HELO and MAIL FROM fields, impacting products like Fedora and TrustedDomain. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low attack complexity, requiring no user interaction or privileges. Successful exploitation could lead to high impacts on confidentiality, integrity, and availability, enabling spoofing and phishing attacks. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. The vulnerability has received minimal community discussion and media coverage, suggesting a low level of public awareness despite its critical severity.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.3.0, <= 1.3.2CPE matchmatch criteria | cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:* | ||
1.4.0CPE matchmatch criteria | cpe:2.3:a:trusteddomain:opendmarc:1.4.0:*:*:*:*:*:*:* | ||
2.0.2CPE matchmatch criteria | cpe:2.3:a:pypolicyd-spf_project:pypolicyd-spf:2.0.2:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.