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From "Jon Moore (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (HTTPCLIENT-1256) HttpClient permits man in the middle attacks when using HTTPS
Date Mon, 29 Oct 2012 19:58:13 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jon Moore closed HTTPCLIENT-1256.

> HttpClient permits man in the middle attacks when using HTTPS
> -------------------------------------------------------------
>                 Key: HTTPCLIENT-1256
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1256
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 3.1 Final
>            Reporter: Robert Elliot
>            Priority: Critical
> As documented here:http://www.cs.utexas.edu/~shmat/shmat_ccs12.pdf HttpClient 3.1 does
not use JSSE correctly - specifically, a request over HTTPS does not validate that the returned
certificate is actually for the domain originally requested. This means a man in the middle
attack via DNS poisoning will work.
> I have proven this locally by setting a /etc/hosts entry for www.google.com to the IP
address of github.com. When I then run the following code:
> HttpClient client = new HttpClient();
> GetMethod get = new GetMethod("https://www.google.com");
> client.executeMethod(get);
> System.out.println(get.getResponseBodyAsString());
> I am returned the contents of the github.com page. I should have had an exception warning
me that the certificate was not valid for www.google.com.
> Whilst I appreciate that 3.x is not under development, given the large number of applications
and libraries (such as Axis 1 & 2) that depend on version 3 it would seem responsible
to fix this vulnerability.

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