Wind River Support Network


LIN1021-4520 : Security Advisory - dropbear - CVE-2021-36369

Created: Oct 12, 2022    Updated: Mar 1, 2023
Resolved Date: Mar 1, 2023
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace


An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.

CREATE(Triage):(User=admin) CVE-2021-36369 (


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