Changes between Version 4 and Version 5 of CachePoisonExample


Ignore:
Timestamp:
Nov 4, 2010 5:16:02 PM (13 years ago)
Author:
sunshine
Comment:

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  • CachePoisonExample

    v4 v5  
    5757  This is a special case of cache poisoning where the target is DNS cache.
    5858
    59 Dimensions:
    6059 * '''Logical topology:'''
    61    [[Image(dnscpobj.jpg)]]
    6260
    63    (in English: There is one attacker node. There is either a fakeIP or fake authority that the attacker wants to inject into the cache. The first is of type IPaddress, the second of type DNSname. Both of these types are subtypes of Info, and this is recorded somewhere in the domain knowledge DB. A cache is simply a collection of DNSRecord items, one or more. These are also subtypes of Info and in the domain knowledge DB there's syntax defined for a DNSRecord. Cache does not reside at the attacker.)
     61    Attacker extends Node
     62
     63    Auth extends Node
     64
     65    Name extends DNSName
     66
     67    RealIP extends IPAddress
     68
     69    FakeIP extends IPAddress or fakeAuth extends DNSName
     70
     71    victimCache extends Object
     72 
     73    victimCache := {DNSRecord[] records}
     74
     75    authCache extends Object
     76
     77    authCache := {DNSRecord[] records = {Name=RealIP, auth(domain(Name)) = Auth}
     78
     79  '''Cardinality:'''
     80
     81    |Attacker|,,1,,
     82
     83    |Auth|,,1,,
     84
     85    |Name|,,1,,
     86
     87    |FakeIP|,,1,,
     88
     89    |fakeAuth|,,1,,
     90
     91    |RealIP|,,1,,
     92
     93    |victimCache|,,1,,
     94
     95    |authCache|,,1,,
     96
     97  '''Relationships:'''
     98
     99    not collocated(victimCache, Attacker)
     100
     101    not collocated(victimCache, Auth)
     102collocated(AuthCache, Auth)
     103
    64104
    65105