CVE-2024-55563

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Third-Party Advisory github.io Third-Party Advisory bitcoin.it
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures third party advisory
https://bitcoincore.org product
https://delvingbitcoin.org/t/full-disclosure-transaction-relay-throughput-overflow-attacks-against-off-chain-protocols/1305 issue tracking
https://gnusha.org/pi/bitcoindev/CALZpt+EptER=p+P7VN3QAb9n=dODA9_LnR9xZwWpRsdAwedv=w@mail.gmail.com/T/#u mailing list
https://ariard.github.io third party advisory

Frequently Asked Questions

What is the severity of CVE-2024-55563?
CVE-2024-55563 has been scored as a medium severity vulnerability.
How to fix CVE-2024-55563?
To fix CVE-2024-55563, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-55563 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-55563 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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