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Affected Component
Analysis
dropbear
Patched
Name
CVE-2021-36369
Description
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.
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/mkj/dropbear/pull/128Third Party Advisory
https://github.com/mkj/dropbear/releasesRelease Notes
https://github.com/mkj/dropbear/pull/128Third Party Advisory
https://github.com/mkj/dropbear/releasesRelease Notes
Analysis#
Vulnerability Ratings#
7.5
CVSSv31
7.5
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
dropbear (yocto:kirkstone)
#
Title
Author
Resolve
1
added option to disable trivial auth methods (#128)
Manfred Kaiser <37737811+manfred-kaiser@users.noreply.github.com>
CVE-2021-36369