CVE-2021-34555 describes a denial-of-service vulnerability in OpenDMARC versions 1.4.1 and 1.4.1.1, affecting Fedora and TrustedDomain distributions. An unauthenticated remote attacker can trigger a NULL pointer dereference and application crash by sending a specially crafted email with a multi-value From header. This vulnerability carries a CVSS score of 7.5 (High), indicating a low-complexity attack with no user interaction required, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.4.1CPE matchmatch criteria | cpe:2.3:a:trusteddomain:opendmarc:1.4.1:*:*:*:*:*:*:* | ||
1.4.1.1CPE matchmatch criteria | cpe:2.3:a:trusteddomain:opendmarc:1.4.1.1:*:*:*:*:*:*:* | ||
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:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.