UpHeron
All vulnerabilities

Servers and applications

CVE-2021-36368

An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to…

Severity
Low 3.7
Published
13 Mar 2022
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.9
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Every version before 8.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-36368
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-36368