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19 lines
1.1 KiB
Markdown
19 lines
1.1 KiB
Markdown
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### [CVE-2020-26896](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26896)
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### Description
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Prior to 0.11.0-beta, LND (Lightning Network Daemon) had a vulnerability in its invoice database. While claiming on-chain a received HTLC output, it didn't verify that the corresponding outgoing off-chain HTLC was already settled before releasing the preimage. In the case of a hash-and-amount collision with an invoice, the preimage for an expected payment was instead released. A malicious peer could have deliberately intercepted an HTLC intended for the victim node, probed the preimage through a colluding relayed HTLC, and stolen the intercepted HTLC. The impact is a loss of funds in certain situations, and a weakening of the victim's receiver privacy.
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### POC
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#### Reference
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No PoCs from references.
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#### Github
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- https://github.com/ARPSyndicate/cvemon
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- https://github.com/uvhw/conchimgiangnang
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