CVE-2024-55563: Medium severity bitcoin vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-55563?
CVE-2024-55563 is considered a significant vulnerability as it allows transaction-relay jamming which can disrupt off-chain transactions.
How do I fix CVE-2024-55563?
To mitigate CVE-2024-55563, users should upgrade to Bitcoin Core version 27.3 or later which addresses this vulnerability.
What types of attacks does CVE-2024-55563 facilitate?
CVE-2024-55563 facilitates transaction-relay jamming attacks that prevent the propagation of transactions in Lightning channels.
Which versions of Bitcoin Core are affected by CVE-2024-55563?
Bitcoin Core versions up to and including 27.2 are affected by CVE-2024-55563.
Does CVE-2024-55563 relate to any other vulnerabilities?
Yes, CVE-2024-55563 is related to CVE-2024-52913, both concerning threats to transaction integrity in Bitcoin.