GHSA-h4c3-5275-vrmg Nervos CKB Pool does not remove the conflicting transactions from the statistics
An attacker can cause the Nervos CKB transaction pool to fill up and reject all new transactions by exploiting a statistics tracking bug.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-h4c3-5275-vrmg?
GHSA-h4c3-5275-vrmg is a denial of service vulnerability in ckb, published on 3 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Impact
There's a bug in the pool statistics that when conflicting transactions are removed from the pool, they are not subtracted from the statics. Finally, the transaction pool keeps full and reject all transactions.
Patches
0.39.2
Workarounds
Restart the CKB node.
Which versions are affected by GHSA-h4c3-5275-vrmg?
2 open source packages ship an affected version, including ckb.
| Package | Affected | Fixed in |
|---|---|---|
ckb crates.io | All versions | 0.39.2 |
ckb crates.io | All versions | 0.39.2 |
How do I fix GHSA-h4c3-5275-vrmg?
Upgrade ckb to 0.39.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-h4c3-5275-vrmg being exploited?
There is no known exploitation of GHSA-h4c3-5275-vrmg in the wild and no public exploit code.