CVE-2021-36368
⚪ Do wiadomości
Błąd w OpenSSH umożliwia atakującemu manipulację uwierzytelnieniem FIDO bez wiedzy użytkownika.
CVSS
3.7
EPSS
0.4%
Exploit
none
Vendor
debian
Opis źródłowy (NVD)
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.
auth-bypass
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 3.7 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.4% |
| Opublikowano (NVD) | 2022-03-13 00:15:07 UTC |
| Ostatnia modyfikacja (NVD) | 2026-05-29 20:16:20 UTC |
Referencje
- https://bugzilla.mindrot.org/show_bug.cgi?id=3316 (cve@mitre.org) [Issue Tracking, Third Party Advisory]
- https://docs.ssh-mitm.at/trivialauth.html (cve@mitre.org) [Third Party Advisory]
- https://github.com/openssh/openssh-portable/pull/258 (cve@mitre.org) [Patch, Third Party Advisory]
- https://security-tracker.debian.org/tracker/CVE-2021-36368 (cve@mitre.org) [Third Party Advisory]
- https://www.openssh.com/security.html (cve@mitre.org) [Vendor Advisory]