Date: Thu, 27 Mar 2014 16:00:18 +0100 From: Tristan Cacqueray <tristan.cacqueray@...vance.com> To: oss-security@...ts.openwall.com Subject: [OSSA 2014-007] Potential context confusion in Keystone middleware (CVE-2014-0105) OpenStack Security Advisory: 2014-007 CVE: CVE-2014-0105 Date: March 27, 2014 Title: Potential context confusion in Keystone middleware Reporter: Kieran Spear (University of Melbourne) Products: python-keystoneclient Versions: All versions up to 0.6.0 Description: Kieran Spear from the University of Melbourne reported a vulnerability in Keystone auth_token middleware (shipped in python-keystoneclient). By doing repeated requests, with sufficient load on the target system, an authenticated user may in certain situations assume another authenticated user's complete identity and multi-tenant authorizations, potentially resulting in a privilege escalation. Note that it is related to a bad interaction between eventlet and python-memcached that should be avoided if the calling process already monkey-patches "thread" to use eventlet. Only keystone middleware setups using auth_token with memcache are vulnerable. python-keystoneclient fix (included in 0.7.0 release): https://review.openstack.org/81078 References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0105 https://bugs.launchpad.net/bugs/1282865 -- Tristan Cacqueray OpenStack Vulnerability Management Team Download attachment "signature.asc" of type "application/pgp-signature" (556 bytes)
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