CVE-2024-33655 Affecting unbound package, versions <1.20.0-1ubuntu1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UBUNTU2410-UNBOUND-8191541
  • published15 Oct 2024
  • disclosed6 Jun 2024

Introduced: 6 Jun 2024

CVE-2024-33655  (opens in a new tab)

How to fix?

Upgrade Ubuntu:24.10 unbound to version 1.20.0-1ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound package and not the unbound package as distributed by Ubuntu. See How to fix? for Ubuntu:24.10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1