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From "Colm O hEigeartaigh (Commented) (JIRA)" <>
Subject [jira] [Commented] (CXF-1636) Have WSS4J in/out interceptors require nonces and timestamps when using UsernameTokens?
Date Thu, 08 Mar 2012 11:53:59 GMT


Colm O hEigeartaigh commented on CXF-1636:

Thanks for the comments!

> On 2.5.x/2.4.x, I'd also switch to <scope>provided</scope><optional>true</optional>
so users won't have 
> that dependency unexpectedly added.


> Is the file in src/main/resources/ehcache.xml normal? 

According to

"Ehcache looks for a file called ehcache.xml in the top level of the classpath. Failing that
it looks for ehcache-failsafe.xml in the classpath. ehcache-failsafe.xml is packaged in the
Ehcache jar and should always be found."

What I *could* do is to rename that file to ehcache-failsafe.xml. The problem with this though
is that a warning will be printed out for anything downstream from the security module that
doesn't explicitly specify an ehcache.xml file. Is this acceptable? I could update all systests
+ demos to include the file.

> There is still a way to explicitly set that value that causes it to act as the default,

Good point Glen. I could change the boolean properties so that in addition to true/false you
can specify "RecipientOnly"?

> Also, is there a use case for caching on the client side?

Probably not a common use-case for caching UsernameToken nonces - that's why I want to disable
it by default. It can be enabled by setting the property to true. I don't see a use-case for
providing an "InitiatorOnly" configuration option.

> if you wish I think it would be acceptable to activate it by default with a note in the
release notes of 
> this change for 2.4/2.5. 

I'm a bit nervous about this suggestion, as it's introducing a new dependency and changed
behaviour on a minor upgrade. 


> Have WSS4J in/out interceptors require nonces and timestamps when using UsernameTokens?
> ---------------------------------------------------------------------------------------
>                 Key: CXF-1636
>                 URL:
>             Project: CXF
>          Issue Type: Improvement
>          Components: WS-* Components
>            Reporter: Glen Mazza
>            Assignee: Colm O hEigeartaigh
>            Priority: Minor
>         Attachments: cxf-1636.patch
> Our WSS4J In/Out interceptors[1][2] do not appear to be requiring UsernameTokens to have
timestamps and nonces.  From [3], lines 176-190, these are used to prevent replay attacks
(i.e., an intruder just copying the entire soap header, encrypted or not, and reusing it for
another request).  
> To fix this problem, this blog sample[4] created a separate interceptor that will reject
any UsernameToken that does not have both a timestamp and a nonce.  Perhaps we should update
our WSS4J in/out interceptors to require both of these, so external users don't need to do
> A question though--I'm unsure where the nonce-checking is being done--our WSS4J interceptors
seem to be ignoring them, but perhaps WSS4J is doing the checking/validation that they are
not being used more then once.
> Glen
> [1]
> [2]
> [3]
> [4]

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