CVE-2020-36843

NameCVE-2020-36843
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1100993

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libeddsa-java (PTS)trixie0.3.0-2vulnerable
sid0.3.0-2.1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libeddsa-javasource(unstable)0.3.0-2.11100993

Notes

https://github.com/str4d/ed25519-java/pull/82

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