PT-2021-23356 · Lightning · Lnd

Eugene Siegel · Published 2021-10-04 · Updated 2022-07-12 · CVE-2021-41593

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Lightning Labs lnd versions prior to 0.13.3-beta

Description The issue allows for loss of funds due to dust HTLC exposure.

Recommendations For versions prior to 0.13.3-beta, update to version 0.13.3-beta or later to resolve the issue.

Exploit

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2021-41593

Affected Products

Lnd

References · 10

• 🔥 https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.html · Exploit
• https://osv.dev/vulnerability/CVE-2021-41593 · Vendor Advisory
• https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html · Vendor Advisory
• https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-41593 · Security Note
• https://github.com/lightningnetwork/lnd/releases/tag/v0.13.3-beta · Note
• https://github.com/lightningnetwork/lnd/blob/master/docs/release-notes/release-notes-0.13.3.md · Note
• https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing · Note
• https://t.me/cibsecurity/29906 · Telegram Post
• https://t.me/cvenotify/21895 · Telegram Post