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Re: Can such problem occur in MPLS

  • From: Eric Osborne <eosborne@cisco.com>
  • Date: Sat, 11 Jan 2003 22:32:03 -0500
  • Cc: mpls-ops@mplsrc.com
  • Resent-Date: Sat, 11 Jan 2003 23:50:09 -0500
  • To: Mehwish Ahmed <mehwishkhurshid@yahoo.com>
  • User-Agent: Mutt/1.2.5i
  • X-GPG-Fingerprint: 6412 0836 E440 B3EA 980C 4951 611E 1819 2E71 8562

On Sat, Jan 11, 2003 at 01:00:27PM -0800, Mehwish Ahmed wrote:
> 
> I got a confussion if such problems can occur in MPLS
> 
> In any case is it possible that router in a LSP sends bogus packet with correct outgoing Label...??
> 
> or
> 
> If somehow a label is spoofed from a LSP and same label is then used to sent bogus packet through LSP ...??
> 
> Like Router1 uses LABEL1 as outgoing label for messages send to Router2, both Router1 and Router2 are in LSP.If attacker spoofs link between Router1 and Router2  to get value of label i.e LABEL1.Then using the same LABEL1 attacker pushes rudendent data array in LSP. 
> 

Bottom line(s):

1) don't accept labels from a customer outside of a CSC scenario, and
   the risk of label spoofing goes away.

2) if you're talking about bugs, sure anything's possible.




eric

> 
> 
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