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Date: Fri, 24 Jun 2016 12:01:11 -0700 (PDT)
From: Alvaro Hoyos <>
To: rubysec-announce <>
Subject: Re: [CVE-2016-5697] signature wrapping attack vulnerability in
 ruby-saml prior to version 1.3.0

Thanks to Robert Clancy from for discovering and responsibly 
reporting this issue.

On Friday, June 24, 2016 at 11:35:34 AM UTC-7, Alvaro Hoyos wrote:
> Overview: 
> Ruby-saml prior to version 1.3.0 is vulnerable to an XML signature 
> wrapping attack. Ruby-saml users must update to 1.3.0 version which 
> implements 3 extra validations to mitigate this kind of attack.
> Overall CVSS Score 6.1
> Fix: Add extra validations to prevent Signature wrapping attacks [1]
> [1]
> alvaro j hoyos | chief information security officer | 
> | +1 415.653.1893 | skype: alvaroonelogin

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