CVE-2022-39389
Description
Lightning Network Daemon (lnd) is an implementation of a lightning bitcoin overlay network node. All lnd nodes before version `v0.15.4` are vulnerable to a block parsing bug that can cause a node to enter a degraded state once encountered. In this degraded state, nodes can continue to make payments and forward HTLCs, and close out channels. Opening channels is prohibited, and also on chain transaction events will be undetected. This can cause loss of funds if a CSV expiry is researched during a breach attempt or a CLTV delta expires forgetting the funds in the HTLC. A patch is available in `lnd` version 0.15.4. Users are advised to upgrade. Users unable to upgrade may use the `lncli updatechanpolicy` RPC call to increase their CLTV value to a very high amount or increase their fee policies. This will prevent nodes from routing through your node, meaning that no pending HTLCs can be present.
How to fix
- lightning_network_daemon_project lightning_network_daemon0.15.4 or later
- btcd_project btcd0.23.3 or later
- github.com/lightningnetwork/lnd0.15.4-beta or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lightning_network_daemon_project lightning_network_daemon | v < 0.15.4 | 0.15.4 |
| btcd_project btcd | v < 0.23.3 | 0.23.3 |
| github.com/lightningnetwork/lndGo | v < 0.15.4-beta | 0.15.4-beta |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.