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Message from discussion VMS security vulnerability (POP server)
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JF Mezei  
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 More options Jul 1 2007, 9:27 pm
Newsgroups: comp.os.vms
From: JF Mezei <jfmezei.spam...@vaxination.ca>
Date: Sun, 01 Jul 2007 21:27:57 -0400
Local: Sun, Jul 1 2007 9:27 pm
Subject: VMS security vulnerability (POP server)
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OK, it has been a couple of weeks and haven't heard anything back from HP).

When a pop client requests access to the VMS POP server (Alpha VMS 8.3,
TCPIP Services 5.6) and provides incorrect username/password, this event
is not logged in the audit server. A simple message is sent to OPCOM.
This message does not contain any clue on the origin of the request.

So overnight, it becomes possible to run brute force attempts on
usernames via POP since no intrusion detection/evasion is made, and
short of many messages in operator.log, there is nothing in AnA/AUDIT
and no information on the IP address of the client that made those attempts.

(I got such an attack with thousands of attempts).

The whole intrusion detection scheme needs to apply to ALL services
which grant access to VMS via user/password combination and all such
application should comply to whateer calling standards to ensure that
all attempts with invalid credentials are properly logged, including IP
address and the username that was attempted.


 
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