Date: Sun, 12 Jul 2015 15:12:33 -0500 From: Kyle Kelley <rgbkrk@...il.com> To: oss-security@...ts.openwall.com Cc: Muhammad A Khan <khanam@...ibm.com>, security <security@...thon.org> Subject: CVE request: IPython CSRF validation Email addresses of requester: security@...thon.org; rgbkrk@...il.com; khanam@...ibm.com Software name: IPython notebook Type of vulnerability: CSRF Attack outcome: Possible remote execution Patches: 2.x: https://github.com/ipython/ipython/commit/a05fe052a18810e92d9be8c1185952c13fe4e5b0 3.x: https://github.com/ipython/ipython/commit/1415a9710407e7c14900531813c15ba6165f0816 Affected versions: 0.12 ≤ version ≤ 3.2.0 Summary: POST requests exposed via the IPython REST API are vulnerable to cross-site request forgery (CSRF). Web pages on different domains can make non-AJAX POST requests to known IPython URLs, and IPython will honor them. The user's browser will automatically send IPython cookies along with the requests. The response is blocked by the Same-Origin Policy, but the request isn't. API paths with issues: * POST /api/contents/<path>/<file> * POST /api/contents/<path>/<file>/checkpoints * POST /api/contents/<path>/<file>/checkpoints/<checkpoint_id> * POST /api/kernels * POST /api/kernels/<kernel_id>/<action> * POST /api/sessions * POST /api/clusters/<cluster_id>/<action> Mitigations: Upgrade to IPython 3.2.1. If using pip, pip install --upgrade ipython[notebook] For conda: conda update conda conda update ipython ipython-notebook Vulnerability was found by Ahmad Khan, Security Engineer at IBM. -- Kyle Kelley (@...krk <https://twitter.com/rgbkrk>; lambdaops.com, developer.rackspace.com)
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