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CVE-2022-39389

8.2 · HIGH

Lightning Network Daemon (lnd) is an implementation of a lightning bitcoin overlay network node.

Published Nov 17, 2022CWE-20EPSS 1.11%

Overview

CVE-2022-39389 is a high-severity vulnerability. It was published on November 17, 2022 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/lightningnetwork/lnd/issues/7096GitHubgithub.com/lightningnetwork/lnd/pull/7098GitHubgithub.com/lightningnetwork/lnd/releases/tag/v0.15.4-betaGitHubgithub.com/lightningnetwork/lnd/security/advisories/GHSA-hc82-w9v8-83prGitHubgithub.com/lightningnetwork/lnd/issues/7096GitHubgithub.com/lightningnetwork/lnd/pull/7098GitHubgithub.com/lightningnetwork/lnd/releases/tag/v0.15.4-betaGitHubgithub.com/lightningnetwork/lnd/security/advisories/GHSA-hc82-w9v8-83pr

How CyberStrike helps

Frequently asked questions

What is CVE-2022-39389?

CVE-2022-39389 is a high-severity vulnerability. It was published on November 17, 2022 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2022-39389?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-39389?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-39389?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-39389 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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