Trick user to send private key password to compromised host
Roman Fiedler
roman.fiedler at telbiomed.at
Tue May 13 19:01:25 EST 2008
Hi list,
I do not known, if this is really an issue but i noticed that when
connecting to a remote ssh host with the standard linux openssh client
using a private key, that there is no line of text indicating when the
local key-passwd process was completed and the connection session was
established.
On a compromised host, the login shell could write the line 'Enter
passphrase for key 'guess the filename using the current account
name':'. If unnoticed, the user will think, that he misstyped the
passphrase and repeat it. After capturing the word, the login could
continue with the standard procedure (e.g. motd banner).
lg roman
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