[omniORB] Naming Server Crash

Brent Fulgham brent.fulgham@xpsystems.com
Tue, 14 Dec 1999 14:27:11 -0800


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> > It's with the 2.8.0 version (Linux debian 2.1). If you take the eg3
> > example and you change in the client 
> > orb->resolve_initial_references("NameService")
> > by (thus a typo :-) )
> > orb->resolve_initial_references("NamyService")
> > then the naming service blocks on next calls. Ideal for 
> denial of service
> > attacks !
> 
> This is sort of a bug. It only arises if omniNames has been started
> with -ORBInitialHost and -ORBInitialPort. In that case, it deadlocks
> trying to resolve initial references with itself. The workaround for
> now is to start omniNames without the ORBInitialHost/Port.
> 
Would this also occur with an /etc/omniorb.cfg such as:

host		blah
port		8088

Or is it only if these are passed on the command line?

-Brent

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<P><FONT SIZE=2>&gt; &gt; It's with the 2.8.0 version (Linux debian 2.1). If you take the eg3</FONT>
<BR><FONT SIZE=2>&gt; &gt; example and you change in the client </FONT>
<BR><FONT SIZE=2>&gt; &gt; orb-&gt;resolve_initial_references(&quot;NameService&quot;)</FONT>
<BR><FONT SIZE=2>&gt; &gt; by (thus a typo :-) )</FONT>
<BR><FONT SIZE=2>&gt; &gt; orb-&gt;resolve_initial_references(&quot;NamyService&quot;)</FONT>
<BR><FONT SIZE=2>&gt; &gt; then the naming service blocks on next calls. Ideal for </FONT>
<BR><FONT SIZE=2>&gt; denial of service</FONT>
<BR><FONT SIZE=2>&gt; &gt; attacks !</FONT>
<BR><FONT SIZE=2>&gt; </FONT>
<BR><FONT SIZE=2>&gt; This is sort of a bug. It only arises if omniNames has been started</FONT>
<BR><FONT SIZE=2>&gt; with -ORBInitialHost and -ORBInitialPort. In that case, it deadlocks</FONT>
<BR><FONT SIZE=2>&gt; trying to resolve initial references with itself. The workaround for</FONT>
<BR><FONT SIZE=2>&gt; now is to start omniNames without the ORBInitialHost/Port.</FONT>
<BR><FONT SIZE=2>&gt; </FONT>
<BR><FONT SIZE=2>Would this also occur with an /etc/omniorb.cfg such as:</FONT>
</P>

<P><FONT SIZE=2>host&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; blah</FONT>
<BR><FONT SIZE=2>port&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8088</FONT>
</P>

<P><FONT SIZE=2>Or is it only if these are passed on the command line?</FONT>
</P>

<P><FONT SIZE=2>-Brent</FONT>
</P>

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