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This queue is for tickets about the POE-Component-Client-HTTP CPAN distribution.

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The Basics
Id: 30400
Status: resolved
Priority: 0/
Queue: POE-Component-Client-HTTP

Owner: Nobody in particular
Requestors: hanenkamp [...]

Bug Information
Severity: Critical
Broken in: 0.82
Fixed in: (no value)

Subject: Security issue with the way cookies are handled
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There's a critical security problem with POE::Component::Client::HTTP. In the Request module, it clones the current request to perform redirects. If the redirect goes from one server to another, the cookies from the first server are passed to the second, which is a violation of the cookies spec. If the request is going to be cloned this way, then at least the "Cookie" header (and possibly others) needs to be sanitized. This is my recommendation. This snippet with the added remove_header() call I'm suggesting is from around line 449 of POE::Component::Client::HTTP::Request in check_redirect(). else { # All fine, yield new request and mark this disabled. my $newrequest = $self->[REQ_REQUEST]->clone(); + $newrequest->remove_header('Cookie'); DEBUG and warn "RED: new request $newrequest"; $newrequest->uri($new_uri); _set_host_header ($newrequest); $self->[REQ_STATE] = RS_REDIRECTED; DEBUG and warn "RED: new request $newrequest"; return $newrequest; }
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Thank you again. I've applied your security change as revision 316 and commented it with a TODO to consider whether other headers should be removed.

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