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THREATINT
PUBLISHED

CVE-2024-1975

SIG(0) can be used to exhaust CPU resources



Assignerisc
Reserved2024-02-28
Published2024-07-23
Updated2024-08-01

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.



HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Product status

Default status
unaffected

9.0.0
affected

9.16.0
affected

9.18.0
affected

9.19.0
affected

9.9.3-S1
affected

9.16.8-S1
affected

9.18.11-S1
affected

References

https://kb.isc.org/docs/cve-2024-1975 (CVE-2024-1975) vendor-advisory

http://www.openwall.com/lists/oss-security/2024/07/23/1

http://www.openwall.com/lists/oss-security/2024/07/31/2

cve.org CVE-2024-1975

nvd.nist.gov CVE-2024-1975

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