Date: Mon, 23 Mar 2015 21:33:04 -0700 From: Andy Brody <andy@...ody.com> To: oss-security@...ts.openwall.com Subject: CVE-2015-1820: ruby rest-client session fixation vulnerability Following the very similar vulnerability in python-requests (CVE-2015-2296), the rest-client team discovered a vulnerability which has now been fixed in rest-client 1.8.0. https://rubygems.org/gems/rest-client/versions/1.8.0 https://github.com/rest-client/rest-client/issues/369 The problematic behavior was introduced in rest-client 1.6.1: any Set-Cookie headers present in an HTTP 30x redirection response are blindly sent to the redirection target, regardless of domain, path, expiration, or secure cookie settings. All subsequent 1.6.x and 1.7.x releases are affected. Similarly to the issue with python-requests, the issue could be exploited in the following ways: - If you are the redirection source (i.e. you can make rest-client hit your URL), you can make rest-client perform a request to any third-party domain with cookies of your choosing. This may be useful in performing a session fixation attack. - If you are the redirection target (i.e. you can make a third-party site redirect to your URL), you can steal any cookies set by the third-party redirection. This issue has been assigned CVE-2015-1820. Cheers, Andy
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