Security Bulletin: IBM DevOps Deploy / IBM UrbanCode Deploy (UCD) is susceptible to Improper Verification of Cryptographic Signature in SSHJ (CVE-2020-36843)

Summary 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...