GitHub Advisoryadvisory · Go

GHSA-hc82-w9v8-83pr Witness Block Parsing DoS Vulnerability

HIGH Published 2022-11-18 Modified 2022-11-18 Official page ↗
Aliases
CVE-2022-39389
Ecosystem
Go
Packages
github.com/lightningnetwork/lnd
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weaknesses
CWE-20
Reviewed
2022-11-18

Affected packages

• Go github.com/lightningnetwork/lnd: < 0.15.4-beta → fixed in 0.15.4-beta

Description

Impact 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. Patches A patch is available starting with lnd `v0.15.4`. Workarounds Nodes can 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. References https://github.com/lightningnetwork/lnd/issues/7096 https://github.com/lightningnetwork/lnd/releases/tag/v0.15.4-beta

Related

Alias · CVE (1)

  • CVE-2022-39389 Lightning Network Daemon (lnd) is an implementation of a lightning bitcoin overlay network node. vulnerability

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References