Resource Exhaustion Affecting unbound-libs-debuginfo package, versions <0:1.17.1-1.amzn2023.0.4


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-AMZN2023-UNBOUNDLIBSDEBUGINFO-6839648
  • published14 May 2024
  • disclosed6 Jun 2024

Introduced: 14 May 2024

CVE-2024-33655  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 unbound-libs-debuginfo to version 0:1.17.1-1.amzn2023.0.4 or higher.
This issue was patched in ALAS2023-2024-610.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound-libs-debuginfo package and not the unbound-libs-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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