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CVE-2024-55563

Date: December 8, 2024

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.

Language: C++

Severity Score

Related Resources (7)

https://ariard.github.io
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
https://nvd.nist.gov/vuln/detail/CVE-2024-55563
https://gnusha.org/pi/bitcoindev/CALZpt+EptER=p+P7VN3QAb9n=dODA9_LnR9xZwWpRsdAwedv=w@mail.gmail.com/T/#u
https://bitcoincore.org
https://delvingbitcoin.org/t/full-disclosure-transaction-relay-throughput-overflow-attacks-against-off-chain-protocols/1305
https://www.mend.io/vulnerability-database/CVE-2024-55563

Severity Score

Weakness Type (CWE)

Allocation of Resources Without Limits or Throttling

CWE-770

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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