CVE-2020-36843

medium

Description

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.

References

https://github.com/str4d/ed25519-java/issues/82#issue-727629226

https://eprint.iacr.org/2020/1244

Details

Source: Mitre, NVD

Published: 2025-03-13

Updated: 2025-03-13

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Severity: Medium