Date: Tue, 12 Nov 2013 22:47:06 +0100 From: Josef Šimánek <josef.simanek@...il.com> To: oss-security@...ts.openwall.com Subject: Re: CVE request: rubygem omniauth-facebook CSRF vurnerability Patch prepared to release: https://github.com/mkdynamic/omniauth-facebook/commit/ccfcc26fe7e34acbd75ad4a095fd01ce5ff48ee7 2013/11/12 Josef Šimánek <josef.simanek@...il.com> > # RubyGem omniauth-facebook CSRF vulnerability > > There is a security vulnerability in the CSRF protection of omniauth-facebook 1.4.1. > > Versions affected: 1.4.1 > Not affected: <= 1.4.0 (*) > Fixed versions: >= 1.5.0 > > (*) Versions <= 1.4.0 did not have any CSRF protection. So, while this vulnerability does not directly affect versions <= 1.4.0, downgrading to <= 1.4.0 is not a fix. > > ## Impact > > Because of the way that omniauth-facebook supports setting a per-request state parameter by storing it in the session, it is possible to circumvent the automatic CSRF protection. Therefore the CSRF added in 1.4.1 should be considered broken. > > If you are currently providing a custom state, you will need to store and retrieve this yourself (for example, by using the session store) to use 1.5.0. > > All users running an affected release should upgrade to 1.5.0. > > ## Releases > > The 1.5.0 releases is available at the normal locations. > > > ## Workarounds > > None. > > ## Credits > > Egor Homakov (@homakov) > > > regardsJosef Šimánek > >
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.