CVE-2023-33297

HIGH EXPLOITED IN THE WILD

Bitcoin Core < 24.1 - Denial of Service via Inventory Queue Drain Inefficiency

Title source: llm

Exploitation Summary

CVE-2023-33297 has been observed exploited in the wild (reported by VulnCheck KEV, InTheWild.io).

Description

Bitcoin Core before 24.1, when debug mode is not used, allows attackers to cause a denial of service (e.g., CPU consumption) because draining the inventory-to-send queue is inefficient, as exploited in the wild in May 2023.

References (10)

Core 10

Core References

Not Applicable

https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures

Release Notes

https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-24.1.md

View Writeup ZIP pw:eip

Issue Tracking

https://github.com/bitcoin/bitcoin/issues/27586

Issue Tracking

https://github.com/bitcoin/bitcoin/issues/27623

Issue Tracking, Patch

https://github.com/bitcoin/bitcoin/pull/27610

Various Sources

https://github.com/visualbasic6/drain

View Writeup ZIP pw:eip

Various Sources

https://x.com/123456/status/1711601593399828530

Issue Tracking

https://github.com/dogecoin/dogecoin/issues/3243#issuecomment-1712575544

Mailing List, Third Party Advisory vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F2EI7SAP4QP2AJYK2JVEOO4GJ6DOBSM5/

Mailing List, Third Party Advisory vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3CQY277NWXY3RFCZCJ4VKT2P3ROACEJ/

Scores

CVSS v3 7.5

EPSS 0.0140

EPSS Percentile 69.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

VulnCheck KEV 2023-05-22

InTheWild.io 2023-05-22

CWE

CWE-400

Status published

Products (1)

bitcoin/bitcoin_core < 24.1

Published May 22, 2023

Tracked Since Feb 18, 2026