CVE-2024-35202
HIGHBitcoin Core < 25.0 - Denial of Service via Blocktxn Message Handling
Title source: llmDescription
Bitcoin Core before 25.0 allows remote attackers to cause a denial of service (blocktxn message-handling assertion and node exit) by including transactions in a blocktxn message that are not committed to in a block's merkle root. FillBlock can be called twice for one PartiallyDownloadedBlock instance.
References (5)
Core 5
Core References
Patch, Vendor Advisory
https://bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/
Third Party Advisory
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
Release Notes
https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-25.0.md
Issue Tracking
https://github.com/bitcoin/bitcoin/pull/26898
Release Notes
https://github.com/bitcoin/bitcoin/releases/tag/v25.0
Scores
CVSS v3
7.5
EPSS
0.0090
EPSS Percentile
54.9%
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
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (1)
bitcoin/bitcoin_core
< 25.0
Published
Oct 10, 2024
Tracked Since
Feb 18, 2026