Cyber Resilience

CVE-2023-4408

HighDDoS

Published: 13 February 2024

Published
13 February 2024
Modified
14 March 2025
KEV Added
—
Patch
—
CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0027 50.9th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-4408 is a high-severity Inefficient Algorithmic Complexity (CWE-407) vulnerability in Isc Bind. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 49.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance…

more

by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.

CWE(s)
NVD-CWE-noinfoCWE-407

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

netapp
ontap
9.14.1, 9.15.1
fedoraproject
fedora
38, 39
isc
bind
9.16.11, 9.16.12, 9.16.13, 9.16.14, 9.16.21 · 9.0.0 — 9.16.45 · 9.18.0 — 9.18.21 · 9.19.0 — 9.19.19

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-5 Denial-of-service Protection
addresses: CWE-407

Addresses inefficient algorithms whose complexity can be exploited for DoS.

References