This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-36369 →
DEBIAN-CVE-2021-36369
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 c...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
dropbear
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2022.82-1"}]}]
Debian:13
dropbear
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2022.82-1"}]}]
Debian:14
dropbear
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2022.82-1"}]}]
References
- advisory security-tracker.debian.org