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CVE-2020-36843 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  MITRE
Base Score:  4.3 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://eprint.iacr.org/2020/1244
https://github.com/str4d/ed25519-java/issues/82#issue-727629226

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature MITRE  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-36843
NVD Published Date:
03/13/2025
NVD Last Modified:
03/13/2025
Source:
MITRE