Ed25519 Signature Malleability in ed25519-java Due to Missing Scalar Range Check
The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-36843US | — | — | ||
The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under… | ||||
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references
External citations — patches, advisories, analysis.
- https://eprint.iacr.org/2020/1244WEB
- https://github.com/i2p/i2p.i2p/commit/d7d1dcb5399c61cf2916ccc45aa25b0209c88712#diff-658f7b1aa34b58d27796fccdb8b756c72702d64ae44703374960f1cb89a5a5c3WEB
- https://github.com/str4d/ed25519-javaPACKAGE
- https://github.com/str4d/ed25519-java/issues/82#issue-727629226WEB
- https://nvd.nist.gov/vuln/detail/CVE-2020-36843ADVISORY
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