Great Circle Associates Firewalls
(October 1994)
 

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Subject: Re: syslogd risk
From: rgm3 @ is . chrysler . com (Robert Moskowitz)
Date: Fri, 14 Oct 1994 12:55:02 -0500
To: firewalls @ greatcircle . com

>On Thu, 6 Oct 1994, Jim Carroll wrote:
>
>> I was wondering if running syslogd on a bastion host runs the risk of
>> being exploited?  
>> 
>> That is, it would be nice to run syslogd to report any activities, but
>> does running syslogd translate to possibly presenting a hole?
>> 
>> This would seem to be a Catch-22.
>> 
>
>syslogd does listen on a UDP port to log messages from remote syslogd's...
>I can think of at least one denial-of-service attack with this. 
>
>(Of course, you can remove the UDP code with access to syslogd source)
>
>
>- Paul "Shag" Walmsley <ccshag @
 everest .
 cclabs .
 missouri .
 edu>
>  "I am learning and evolving."

For those of us with the bastion hosts on a screened subnet, seems like that
the outer router could be configured to filter out syslog messages and thus
avoid this.

Robert Moskowitz
Chrysler Corporation
(810) 758-8212


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