| Package | Affected versions | Patched versions |
|---|---|---|
| bitcoin core | < 24.0.1 | 24.0.1 |
Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service (daemon crash) via a flood of low-difficulty header chains (aka a "Chain Width Expansion" attack) because a node does not first verify that a presented chain has enough work before committing to store it.
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