Re: Cisco Security Advisory: IOS HTTP authorization vulnerability

From: David Hyams (david.hyams@kmu-security.ch)
Date: Fri Jun 29 2001 - 03:30:30 PDT

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    ----- Original Message -----
    From: "Oliver Petruzel" <opetruzelat_private>
    
    > (don't even get me started on the amount of info flying around networks
    > now via plaintext SNMP because of enterprise managaement consoles and
    > (soon to be nearly pointless) IDS systems.. Uhhg)
    
    SNMP ? Did somebody mention SNMP?? My favorite protocol :-)
    Seriously though, Cisco devices support SNMP V3, pity nobody bothers to use
    it. I once heard there are add on products for network management systems
    that support SNMP V3, but they're expensive. Would somebody like to start
    "opensnmp", dedicated to open source implementations of "decent" SNMP agents
    and tools? (Home page www.opensnmp.org maybe ?)
    
    > SIDE NOTE: I'd be VERY interested in seeing the process for discovery of
    > this latest cisco hole.  I havent been able to track down the logic used
    > in discovering the /xx/exec capability...
    
    Well, don't laugh, but I was actually trying to study for the CCNA exam. I
    was playing with a router and switch in the lab to get to know IOS better. I
    eventually got bored and started playing with HTTP instead. On one of the
    devices (can't remember which one), I noticed a URL of the form
    http:://level/15/exec/... It seemed that the number 15 had something to do
    with access levels, so I decided to try the number 42 just to see what
    happens...
    (Douglas Adams fans will instantly realise why 42 was a good number to try)
    
    One more point before I forget - when I reported the problem to Cisco I was
    amazed that nobody else had noticed it before. Maybe some people are
    spending too much time looking for bugs in IIS?
    
    regards
    
    David Hyams
    --
    david.hyams@kmu-security.ch
    http://www.kmu-security.ch
    



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