Bug 921335 (CVE-2013-1857)

Summary: CVE-2013-1857 rubygem-actionpack: sanitize_protocol: XSS Vulnerability in the helper of Ruby on Rails
Product: [Other] Security Response Reporter: Kurt Seifried <kseifried>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: athomas, bkabrda, bkearney, bleanhar, ccoleman, cpelland, dajohnso, dmcphers, jeckersb, jialiu, jlieskov, jrusnack, katello-bugs, lmeyer, mmccune, mmcgrath, morazi, msuchy, sclewis, security-response-team, tdawson, vondruch
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20130318,reported=20130313,source=upstream,cvss2=4.3/AV:N/AC:M/Au:N/C:N/I:P/A:N,epel-5/rubygem-actionpack=affected,fedora-all/rubygem-actionpack=affected,cloudformscommon-1/rubygem-actionpack=wontfix,sam-1/rubygem-actionpack=affected,openshift-1/ruby193-rubygem-actionpack=affected,openshift-1/rubygem-actionpack=affected,openshift-enterprise-1/ruby193-rubygem-actionpack=wontfix,openshift-enterprise-1/rubygem-actionpack=wontfix,rhn_satellite_6/ruby193-rubygem-actionpack=affected,cwe=CWE-79
Fixed In Version: rubygem-actionpack 3.1.12, rubygem-actionpack 3.2.13 Doc Type: Bug Fix
Doc Text:
A cross-site scripting (XSS) flaw was found in Action Pack. A remote attacker could use this flaw to conduct XSS attacks against users of an application using Action Pack.
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-01-17 00:34:02 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 921352, 921355, 921358, 921361, 924297, 924298, 995658, 1030779, 1165372, 1165373    
Bug Blocks: 921344, 921347, 921348, 925747, 1000138, 1028279    
Description Flags
3-2-sanitize_protocol.patch none

Description Kurt Seifried 2013-03-13 23:02:16 EDT
XSS Vulnerability in the `sanitize` helper of Ruby on Rails

There is an XSS vulnerability in the sanitize helper in Ruby on Rails. This vulnerability has been assigned the CVE identifier CVE-2013-1857.

Versions Affected:  All.
Not affected:       None.
Fixed Versions:     3.2.13, 3.1.12

The sanitize helper in Ruby on Rails is designed to filter HTML and remove all tags and attributes which could be malicious.  The code which ensured that URLs only contain supported protocols contained several bugs which could allow an attacker to embed a tag containing a URL which executes arbitrary javascript code.

All users running an affected release should either upgrade or use one of the work arounds immediately.

The 3.2.13 and 3.1.12 releases are available at the normal locations.

If you are unable to upgrade, you can place the following code into a file in config/initializers and it will replace the method with the correct implementation.

  module HTML
    class WhiteListSanitizer
      def contains_bad_protocols?(attr_name, value)
        uri_attributes.include?(attr_name) &&
        (value =~ /(^[^\/:]*):|(&#0*58)|(&#x3a)|(&#x70)|(%|&#37;)3A/i && !allowed_protocols.include?(value.split(protocol_separator).first.downcase.strip))

To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series.  They are in git-am format and consist of a single changeset.

* 3-2-sanitize_protocol.patch - Patch for 3.2 series
* 3-1-sanitize_protocol.patch - Patch for 3.1 series
* 3-0-sanitize_protocol.patch - Patch for 3.0 series
* 2-3-sanitize_protocol.patch - Patch for 2.3 series

Please note that only the 3.1.x and 3.2.x series are supported at present.  Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.


Thanks to Alan Jenkins for reporting the vulnerability to us.
Comment 3 Kurt Seifried 2013-03-14 16:33:08 EDT
Created attachment 710233 [details]
Comment 4 Kurt Seifried 2013-03-14 16:33:25 EDT
Created attachment 710234 [details]
Comment 5 Kurt Seifried 2013-03-14 16:33:46 EDT
Created attachment 710235 [details]
Comment 6 Kurt Seifried 2013-03-14 16:34:05 EDT
Created attachment 710236 [details]
Comment 8 Kurt Seifried 2013-03-16 01:27:33 EDT
Please note that upstream reports that the patches have an issue and will be reissued this weekend most likely so we might need to respin this fix.
Comment 9 Kurt Seifried 2013-03-18 01:31:59 EDT
Created attachment 711753 [details]
Comment 10 Kurt Seifried 2013-03-18 01:32:28 EDT
Created attachment 711754 [details]
Comment 11 Kurt Seifried 2013-03-18 01:33:07 EDT
Created attachment 711755 [details]
Comment 12 Kurt Seifried 2013-03-18 01:33:53 EDT
Created attachment 711756 [details]
Comment 14 Vít Ondruch 2013-03-21 10:00:02 EDT
Can I get tracking bug for F1{7,8}? Thank you.
Comment 15 Jan Lieskovsky 2013-03-21 10:14:56 EDT
Created rubygem-actionpack tracking bugs for this issue

Affects: epel-5 [bug 924297]
Affects: fedora-all [bug 924298]
Comment 16 Murray McAllister 2013-03-27 07:28:55 EDT

Red Hat would like to thank Ruby on Rails upstream for reporting this issue. Upstream acknowledges Alan Jenkins as the original reporter.
Comment 17 errata-xmlrpc 2013-04-02 15:47:28 EDT
This issue has been addressed in following products:

  RHEL 6 Version of OpenShift Enterprise

Via RHSA-2013:0698 https://rhn.redhat.com/errata/RHSA-2013-0698.html
Comment 18 Kurt Seifried 2013-07-26 02:16:49 EDT
The Red Hat Security Response Team has rated this issue as having moderate security impact in CloudForms 1.1. This issue is not currently planned to be addressed in future updates.
Comment 22 Martin Prpič 2014-11-14 11:20:25 EST

A cross-site scripting (XSS) flaw was found in Action Pack. A remote attacker could use this flaw to conduct XSS attacks against users of an application using Action Pack.
Comment 23 errata-xmlrpc 2014-11-17 12:08:51 EST
This issue has been addressed in the following products:

  Red Hat Subscription Asset Manager 1.4

Via RHSA-2014:1863 https://rhn.redhat.com/errata/RHSA-2014-1863.html