| id: GO-2020-0012 |
| modules: |
| - module: golang.org/x/crypto |
| versions: |
| - fixed: 0.0.0-20200220183623-bac4c82f6975 |
| vulnerable_at: 0.0.0-20200219234226-1ad67e1f0ef4 |
| packages: |
| - package: golang.org/x/crypto/ssh |
| symbols: |
| - parseED25519 |
| - ed25519PublicKey.Verify |
| - parseSKEd25519 |
| - skEd25519PublicKey.Verify |
| - NewPublicKey |
| derived_symbols: |
| - CertChecker.Authenticate |
| - CertChecker.CheckCert |
| - CertChecker.CheckHostKey |
| - Certificate.Verify |
| - Dial |
| - NewClientConn |
| - NewServerConn |
| - NewSignerFromKey |
| - NewSignerFromSigner |
| - ParseAuthorizedKey |
| - ParseKnownHosts |
| - ParsePrivateKey |
| - ParsePrivateKeyWithPassphrase |
| - ParsePublicKey |
| - ParseRawPrivateKey |
| - ParseRawPrivateKeyWithPassphrase |
| summary: |- |
| Panic due to improper verification of cryptographic signatures in |
| golang.org/x/crypto/ssh |
| 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 |
| credits: |
| - Alex Gaynor, Fish in a Barrel |
| references: |
| - fix: https://go.dev/cl/220357 |
| - fix: https://go.googlesource.com/crypto/+/bac4c82f69751a6dd76e702d54b3ceb88adab236 |
| - web: https://groups.google.com/g/golang-announce/c/3L45YRc91SY |
