CVE-2020-36843 Affecting ed25519-java package, versions <0.3.0-150200.5.9.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-SLES154-ED25519JAVA-9525968
  • published27 Mar 2025
  • disclosed26 Mar 2025

Introduced: 26 Mar 2025

CVE-2020-36843  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 ed25519-java to version 0.3.0-150200.5.9.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ed25519-java package and not the ed25519-java package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1