CVE-2024-1975

SIG(0) can be used to exhaust CPU resources

State: Published
Severity: 7.5 High
Published: Jul 23, 2024
Updated: Feb 13, 2025
Reserved: Feb 28, 2024

Description

If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests. This issue affects BIND 9 versions 9.0.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.49-S1, and 9.18.11-S1 through 9.18.27-S1.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	isc

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
BIND 9ISC	9.0.0 through 9.11.37Affected 9.16.0 through 9.16.50Affected 9.18.0 through 9.18.27Affected 9.19.0 through 9.19.24Affected 9.9.3-S1 through 9.11.37-S1Affected 9.16.8-S1 through 9.16.49-S1Affected 9.18.11-S1 through 9.18.27-S1Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.