An issue was discovered in Dropbear through 2020.81. Due...
High severity
Unreviewed
Published
Oct 13, 2022
to the GitHub Advisory Database
•
Updated Feb 3, 2023
Description
Published by the National Vulnerability Database
Oct 12, 2022
Published to the GitHub Advisory Database
Oct 13, 2022
Last updated
Feb 3, 2023
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.
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