cve-2021-36368
Vulnerability from cvelistv5
Published
2022-03-12 23:24
Modified
2024-08-04 00:54
Severity ?
EPSS score ?
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
▼ | URL | Tags | |
---|---|---|---|
cve@mitre.org | https://bugzilla.mindrot.org/show_bug.cgi?id=3316 | Issue Tracking, Third Party Advisory | |
cve@mitre.org | https://docs.ssh-mitm.at/trivialauth.html | Third Party Advisory | |
cve@mitre.org | https://github.com/openssh/openssh-portable/pull/258 | Patch, Third Party Advisory | |
cve@mitre.org | https://security-tracker.debian.org/tracker/CVE-2021-36368 | Third Party Advisory | |
cve@mitre.org | https://www.openssh.com/security.html | Vendor Advisory |
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.