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Medium severity · published Oct 21, 2020
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
5.3
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LN
Lightning Network Daemon · Lightning Network Daemon Project
0.1; 0.1.1; 0.2; 0.2.1; 0.3; 0.4; +34 more · source: NVD
Affected product
LN
Lightning Network Daemon
Lightning Network Daemon Project
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26895
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26895
Third Party Advisory
https://gist.github.com/ariard/fb432a9d2cd3ba24fdc18ccc8c5c6eb4
Mailing List
https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002856.html
Mailing List
https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002858.html
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