data/reports/GO-2021-0227.yaml

modules:
  - module: golang.org/x/crypto
    versions:
      - fixed: 0.0.0-20201216223049-8b5274cf687f
    vulnerable_at: 0.0.0-20201208171446-5f87f3452ae9
    packages:
      - package: golang.org/x/crypto/ssh
        symbols:
          - connection.serverAuthenticate
        derived_symbols:
          - NewServerConn
description: |
    Clients can cause a panic in SSH servers. An attacker can craft
    an authentication request message for the “gssapi-with-mic” method
    which will cause NewServerConn to panic via a nil pointer dereference
    if ServerConfig.GSSAPIWithMICConfig is nil.
published: 2022-02-17T17:35:32Z
cves:
  - CVE-2020-29652
ghsas:
  - GHSA-3vm4-22fp-5rfm
credit: Joern Schneewesiz, GitLab Security Research Team
references:
  - fix: https://go.dev/cl/278852
  - fix: https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8
  - web: https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1