Date: Mon, 18 Nov 2013 20:29:21 +0100 From: Josef Šimánek <josef.simanek@...il.com> To: oss-security@...ts.openwall.com Subject: Re: CVE request: RubyGem omniauth-facebook access token security vulnerability Sorry for bumping, but is there any problem with this CVE request? Fix is here (https://github.com/mkdynamic/omniauth-facebook/commit/115c0a768cd6f4b9bfae8900f8e3fc4fbeec3ad8) and release is prepared. We're waiting for CVE only. regards Josef 2013/11/15 Josef Šimánek <josef.simanek@...il.com>: > # RubyGem omniauth-facebook access token security vulnerability > > There is a security vulnerability in the omniauth-facebook <= 1.5.0. > > Versions affected: <= 1.5.0 > Fixed versions: >= 1.5.1 > > ## Impact > > Because omniauth-facebook <= 1.5.0 supports passing an access token > directly in the URL, an attacker may be able to authenticate as > another user by passing a valid access token obtained from Facebook > for another app. > > If you're currently using this feature, and passing the access token > directly, you should change your integration to use one of the secure > methods using either a signed request or the code flow. These secure > methods are default, so unless you are explicitly passing an access > token you should not need to make any integration changes to upgrade > to 1.5.1. > > All users running an affected release should upgrade to >= 1.5.1. > > ## Releases > > The 1.5.1 releases is available at the normal locations. > > ## Workarounds > > None. > > ## Credits > > Egor Homakov (@homakov)
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