Resource exhaustion in Bitcoin Core
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. FillBlock can be called twice for one PartiallyDownloadedBlock instance.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures (Third Party Advisory)
- github.com/bitcoin/bitcoin/releases/tag/v25.0 (Release Notes)
- bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/ (Patch, Vendor Advisory)
- github.com/bitcoin/bitcoin/pull/26898 (Issue Tracking)
- github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-25.0.md (Release Notes)
Frequently asked questions
- What is CVE-2024-35202?
- CVE-2024-35202 is a high-severity vulnerability in Bitcoin Core, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-10-10.
- How severe is CVE-2024-35202?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-35202 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.