Red Hat Bugzilla – Bug 1161499
CVE-2014-7818 rubygem-actionpack: arbitrary file existence disclosure
Last modified: 2016-04-26 17:33:38 EDT
The following Ruby on Rails issue was reported[1]: "" Arbitrary file existence disclosure in Action Pack There is an information leak vulnerability in Action Pack. This vulnerability has been assigned the CVE identifier CVE-2014-7818. Versions Affected: >= 3.0.0 Not affected: <= 3.0.0 Fixed Versions: 3.2.20, 4.0.11, 4.1.7, 4.2.0.beta3 Impact ------ Specially crafted requests can be used to determine whether a file exists on the filesystem that is outside the Rails application's root directory. The files will not be served, but attackers can determine whether or not the file exists. This only impacts Rails applications that enable static file serving at runtime. For example, the application's production configuration will say: config.serve_static_assets = true All users running an affected release should either upgrade or use one of the work arounds immediately. Releases -------- The 3.2.20, 4.0.11, 4.1.7 & 4.2.0.beta3 releases are available at the normal locations. Workarounds ----------- To work around this issue, set config.serve_static_assets = false in an initializer. This work around will not be possible in all hosting environments and upgrading is advised. "" [1] https://groups.google.com/forum/#!topic/rubyonrails-security/dCp7duBiQgo
External References: https://groups.google.com/forum/#!topic/rubyonrails-security/dCp7duBiQgo
Upstream patches: https://github.com/rails/rails/commit/9e408e7ae63b1a87ead2671408e53ff1a22fdc08 https://github.com/rails/rails/commit/c05f3bdd64e6f1000c48c17803ce759194db5e8c https://github.com/rails/rails/commit/3437f260a5903b651bf8b8f751345fb288fa9052 https://github.com/rails/rails/commit/9c37d8eb8821aa8dd5ac395ae85344a63ae0e23c
Acknowledgements: Red Hat would like to thank the Ruby on Rails project for reporting this issue. Upstream acknowledges Eaden McKee, Dennis Hackethal & Christian Hansen of Crowdcurity, Juan C. Müller & Mike McClurg of Greenhouse.io, and Alex Ianus of Coinbase as the independent, original reporters.
Statement: Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Created rubygem-actionpack tracking bugs for this issue: Affects: fedora-all [bug 1163511]