CVE-2023-5680

Cleaning an ECS-enabled cache may cause excessive CPU load

State: Published
Severity: 5.3 Medium
Published: Feb 13, 2024
Updated: Mar 17, 2025
Reserved: Oct 20, 2023

Description

If a resolver cache has a very large number of ECS records stored for the same name, the process of cleaning the cache database node for this name can significantly impair query performance. This issue affects BIND 9 versions 9.11.3-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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	isc

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
BIND 9ISC	9.11.3-S1 through 9.11.37-S1Affected 9.16.8-S1 through 9.16.45-S1Affected 9.18.11-S1 through 9.18.21-S1Affected

References

CVE-2023-5680vendor-advisory
https://security.netapp.com/advisory/ntap-20240503-0005/

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