openssh: An issue was discovered in OpenSSH before 8.9
CVE-2021-36368 is fixed in openssh on 1 platform, first by DEBIAN-CVE-2021-36368, released March 13, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 12.15 (bookworm) | 1:8.9p1-1 | DEBIAN-CVE-2021-36368 | Mar 13, 2022 |
| openssh · Debian 13.5 (trixie) | 1:8.9p1-1 | DEBIAN-CVE-2021-36368 | Mar 13, 2022 |
| openssh · Debian 14 | 1:8.9p1-1 | DEBIAN-CVE-2021-36368 | Mar 13, 2022 |
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