Vulnerability in Lightning Network Daemon Project
CVE-2020-26895
Prior to 0.10.0-beta, LND (Lightning Network Daemon) would have accepted a counterparty high-S signature and broadcast tx-relay invalid local commitment/HTLC transactions. This can be exploited by any peer with an open channel regardless of the victim situation (e.g., routing node, payment-receiver, or payment-sender). The impact is a loss of funds in certain situations.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Lightning Network Daemon Project — versions 0.1, 0.1.1, 0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/ariard/fb432a9d2cd3ba24fdc18ccc8c5c6eb4 (Third Party Advisory)
- lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002856.html (Mailing List, Third Party Advisory)
- lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002858.html (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26895?
- CVE-2020-26895 is a medium-severity vulnerability in Lightning Network Daemon Project, classified under Improper Validation of Integrity Check Value. CVSS score: 5.3/10. Published 2020-10-21.
- How severe is CVE-2020-26895?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-26895 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.