CVE-2021-36368
Vulnerability from cvelistv5
Published
2022-03-12 23:24
Modified
2024-08-04 00:54
Severity ?
Summary
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 allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is "this is not an authentication bypass, since nothing is being bypassed.
References
cve@mitre.orghttps://bugzilla.mindrot.org/show_bug.cgi?id=3316Issue Tracking, Third Party Advisory
cve@mitre.orghttps://docs.ssh-mitm.at/trivialauth.htmlThird Party Advisory
cve@mitre.orghttps://github.com/openssh/openssh-portable/pull/258Patch, Third Party Advisory
cve@mitre.orghttps://security-tracker.debian.org/tracker/CVE-2021-36368Third Party Advisory
cve@mitre.orghttps://www.openssh.com/security.htmlVendor Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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