In the Elliptic package 6.5.6 for Node.js, EDDSA signature malleability occurs because there is a missing signature length check, and thus zero-valued bytes can be removed or appended.
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Link | Tags |
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https://github.com/indutny/elliptic/pull/317 | issue tracking exploit |