VDB
ALPINE-CVE-2021-36368
ALPINE-CVE-2021-36368
PUBLISHED
CVSS 3.700000047683716 LOW
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.
Risk Scores
CVSS v3.1
3.700000047683716
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.19 | openssh | 0, 5.1_p1-r1, 5.1_p1-r2 |
| Alpine:v3.22 | openssh | 8.8, 8.8, 8.8 |
| Alpine:v3.21 | openssh | 0, 5.1_p1-r1, 5.1_p1-r2 |
| Alpine:v3.20 | openssh | *, 8.8, 8.8 |
| Alpine:v3.23 | openssh | 0, 5.1_p1-r1, 5.1p1-r0 |
Timeline
- Mar 13, 2022 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch