CVE-2024-35202
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- bitcoin/bitcoin core
- Source
- cve@mitre.org
References
- https://bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/Patch, Vendor Advisory
- https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_ExposuresThird Party Advisory
- https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-25.0.mdRelease Notes
- https://github.com/bitcoin/bitcoin/pull/26898Issue Tracking
- https://github.com/bitcoin/bitcoin/releases/tag/v25.0Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.