VulnerabilityAnalyzed

CVE-2024-55563

Bitcoin Core through 27.2 allows transaction-relay jamming via an off-chain protocol attack, a related issue to CVE-2024-52913.

MEDIUM 5.3EPSS 0.65%

Does this matter?

Lower severity and a low EPSS score (0.65%). Track it; it rarely justifies an emergency change on its own.

Description

Bitcoin Core through 27.2 allows transaction-relay jamming via an off-chain protocol attack, a related issue to CVE-2024-52913. For example, the outcome of an HTLC (Hashed Timelock Contract) can be changed because a flood of transaction traffic prevents propagation of certain Lightning channel transactions.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS: 0.65% probability · 49th percentile
CISA KEV: Not listed
Weakness: CWE-770
Affected: bitcoin/bitcoin core
Source: cve@mitre.org

References

https://ariard.github.ioThird Party Advisory
https://bitcoincore.orgProduct
https://delvingbitcoin.org/t/full-disclosure-transaction-relay-throughput-overflow-attacks-against-off-chain-protocols/1305Issue Tracking
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_ExposuresThird Party Advisory
https://gnusha.org/pi/bitcoindev/CALZpt+EptER=p+P7VN3QAb9n=dODA9_LnR9xZwWpRsdAwedv=w@mail.gmail.com/T/#uMailing List

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.