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Date: Tue, 17 Dec 2013 19:56:18 -0500 (EST)
From: cve-assign@...re.org
To: stbuehler@...httpd.net
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CVE request: Juvia secret token handling
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> Juvia is a Ruby on Rails application to host "comments":
> > A commenting server similar to Disqus and IntenseDebate
>
> It includes a "default" secret to validate cookies in
> `app/config/initializers/secret_token.rb', and the install instructions
> do not include generating a new secret.
> Also the file in question is maintained in git, and configuration
> should not touch these files.
>
> This means an attacker could modify session state, which is somehow
> trusted by the Rails application.
>
> A workaround for Juvia is to generate a new secret (`rake secret') and
> replace the one in
> `app/config/initializers/secret_token.rb' (invalidating all cookies,
> don't forget to restart Juvia).
> You have to be careful when switching between git branches and so on to
> not loose the change.
>
> The core problem is that rails generated the file that way; other gems
> have similar issues.
> The rails security team has been informed about this.
They would be eligible for their own CVE ID if they conclude that this is
a security-relevant implementation error in the file-generation process.
The CVE below is specific to Juvia, for the issue in which a valid
Juvia::Application.config.secret_token value is "shipped" in the product
without an installation step in which the value must be changed.
> * Juvia "public" secret:
> https://github.com/phusion/juvia/blob/master/config/initializers/secret_token.rb
> * Juvia issue for this: https://github.com/phusion/juvia/issues/55
Use CVE-2013-7134.
- --
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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