CVE-2022-39389

 

Published at: - 17-11-2022 11:15

Last modified: - 22-11-2022 05:49

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

 

Verification logic

 

Reference

• https://github.com/lightningnetwork/lnd/issues/7096
• https://github.com/lightningnetwork/lnd/pull/7098
• https://github.com/lightningnetwork/lnd/security/advisories/GHSA-hc82-w9v8-83pr
• https://github.com/lightningnetwork/lnd/releases/tag/v0.15.4-beta

 

Keywords

NVD

 

CVE-2022-39389

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures