packages:
  - module: golang.org/x/crypto
    package: golang.org/x/crypto/ssh
    symbols:
      - parseED25519
      - ed25519PublicKey.Verify
      - parseSKEd25519
      - skEd25519PublicKey.Verify
      - NewPublicKey
    versions:
      - fixed: v0.0.0-20200220183623-bac4c82f6975
description: |
    An attacker can craft an ssh-ed25519 or sk-ssh-ed25519@openssh.com public
    key, such that the library will panic when trying to verify a signature
    with it. If verifying signatures using user supplied public keys, this
    may be used as a denial of service vector.
published: 2021-04-14T20:04:52Z
cves:
  - CVE-2020-9283
ghsas:
  - GHSA-ffhg-7mh4-33c4
credit: Alex Gaynor, Fish in a Barrel
links:
    pr: https://go-review.googlesource.com/c/crypto/+/220357
    commit: https://go.googlesource.com/crypto/+/bac4c82f69751a6dd76e702d54b3ceb88adab236
    context:
      - https://groups.google.com/g/golang-announce/c/3L45YRc91SY