CVE-2021-34555
7.5
HIGH
CVSS 3.1
EPSS 0.48%
Description
OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field.
How to fix CVE-2021-34555
To remediate CVE-2021-34555, upgrade the affected package to a fixed version below.
- Debian/opendmarc—upgrade to 1.4.0~beta1+dfsg-6 or later
Is CVE-2021-34555 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.4.0~beta1+dfsg-6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |