CVE-2024-33655
unbound - security update
7.5
HIGH
CVSS 3.1
EPSS 2.8%
Description
The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the "DNSBomb" issue.
How to fix CVE-2024-33655
To remediate CVE-2024-33655, upgrade the affected package to a fixed version below.
- —upgrade to 1.20.0-r0 or later
- —upgrade to 1.13.1-1+deb11u5 or later
- —upgrade to 1.13.1-1+deb11u5 or later
- —upgrade to 1.17.1-2+deb12u3 or later
Is CVE-2024-33655 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 1.20.0-r0
- from 0, < 1.13.1-1+deb11u5
- from 0, < 1.13.1-1+deb11u5
- from 0, < 1.17.1-2+deb12u3
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 |