CVE-2024-38359: Input Validation Flaw (CVSS 6.5)

Description

The Lightning Network Daemon (lnd) - is a complete implementation of a Lightning Network node. A parsing vulnerability in lnd's onion processing logic and lead to a DoS vector due to excessive memory allocation. The issue was patched in lnd v0.17.0. Users should update to a version > v0.17.0 to be protected. Users unable to upgrade may set the `--rejecthtlc` CLI flag and also disable forwarding on channels via the `UpdateChanPolicyCommand`, or disable listening on a public network interface via the `--nolisten` flag as a mitigation.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

References

Other References

https://delvingbitcoin.org/t/dos-disclosure-lnd-onion-bomb/979 https://github.com/lightningnetwork/lnd/releases/tag/v0.17.0-beta https://github.com/lightningnetwork/lnd/security/advisories/GHSA-9gxx-58q6-42p7 https://lightning.network https://morehouse.github.io/lightning/lnd-onion-bomb https://delvingbitcoin.org/t/dos-disclosure-lnd-onion-bomb/979 https://github.com/lightningnetwork/lnd/releases/tag/v0.17.0-beta https://github.com/lightningnetwork/lnd/security/advisories/GHSA-9gxx-58q6-42p7 https://lightning.network https://morehouse.github.io/lightning/lnd-onion-bomb

Frequently Asked Questions

What is CVE-2024-38359? +

The Lightning Network Daemon (lnd) - is a complete implementation of a Lightning Network node. A parsing vulnerability in lnd's onion processing logic and lead to a DoS vector due to excessive memory allocation. The issue was patched in lnd v0.17.0. Users should update to a version > v0.17.0 to be protected. Users unable to upgrade may set the `--rejecthtlc` CLI flag and also disable forwarding on channels via the `UpdateChanPolicyCommand`, or disable listening on a public network interface via the `--nolisten` flag as a mitigation. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-38359? +

CVE-2024-38359 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-38359? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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