CVE-2020-12460 is a critical heap overflow vulnerability in OpenDMARC versions through 1.3.2 and 1.4.x through 1.4.0-Beta1, affecting Debian and Fedora distributions. This flaw allows remote attackers to trigger memory corruption by sending a specially crafted DMARC aggregate report, leading to a one-byte overwrite of heap metadata. With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a severe risk of complete compromise (confidentiality, integrity, and availability). While no active exploits, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion have been observed, the high severity warrants immediate patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 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:beta0:*:*:*:*:*:* | ||
1.4.0CPE matchmatch criteria | cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:* | ||
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.