CVE-2024-55563 Denial of service in n/a
Attackers can jam Bitcoin Core transaction relay by flooding traffic, preventing Lightning channel transaction propagation and altering HTLC outcomes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-55563?
CVE-2024-55563 is a medium-severity denial of service vulnerability in Bitcoin Bitcoin Core, published on 9 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2024-55563?
It affects 1 product.
Products include Bitcoin Bitcoin Core.
How do I fix CVE-2024-55563?
No fix has been published for CVE-2024-55563 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-55563 being exploited?
There is no known exploitation of CVE-2024-55563 in the wild and no public exploit code.
Other vulnerabilities in Bitcoin Bitcoin Core
Sources
Also known as GHSA-82x2-v3jv-gmrq.