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Category:   Application (Generic)  >   Rails Vendors:   rubyforge.org
Rails Multiple Bugs Let Remote Users Determine Passwords, Modify Records, Bypass Security Restrictions, Deny Service, and Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1034816
SecurityTracker URL:  http://securitytracker.com/id/1034816
CVE Reference:   CVE-2015-7576, CVE-2015-7577, CVE-2015-7578, CVE-2015-7579, CVE-2015-7580, CVE-2015-7581, CVE-2016-0751, CVE-2016-0752, CVE-2016-0753   (Links to External Site)
Date:  Jan 26 2016
Impact:   Denial of service via network, Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 3.2.22.1, 4.1.14.1, 4.2.5.1
Description:   Multiple vulnerabilities were reported in Rails. A remote user can modify data on the target system. A remote user can cause denial of service conditions on the target system. A remote user can bypass security controls on the target system. A remote user can obtain passwords on the target system. A remote user can obtain potentially sensitive information on the target system. A remote user can conduct cross-site scripting attacks.

A remote user can exploit a timing flaw in the basic authentication authorization code in Action Controller in the comparison of user names and passwords to guess the username and password based on the timing [CVE-2015-7576]. Applications that use http_basic_authenticate_with() method calls are affected.

A remote user can send a specially crafted accept header to trigger a flaw in Action Pack and cause a global cache of mime types to increase indefinitely [CVE-2016-0751].

A remote user can exploit a flaw in the handling of nested attributes and destroy flags in Active Record to bypass record destruction protections [CVE-2015-7577]. This can be exploited to set attributes to invalid values or to clear all attributes. The specific impact depends on the application.

A remote user can send specially crafted requests to an application that passes user-supplied input to the render() method without validation to view portions of files on the target system [CVE-2016-0752].

A remote user can supply specially crafted data to potentially bypass input validation in Active Model [CVE-2016-0753]. Applications using Active Model and Active Record outside of a Rails environment may be affected.

Wildcard controller routes in Action Pack may allow a user to trigger an object leak and cause excessive memory consumption [CVE-2015-7581].

The 'rails-html-sanitizer' component does not properly filter HTML code from user-supplied input before displaying the input [CVE-2015-7578, CVE-2015-7579, CVE-2015-7580]. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Ruby software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Daniel Waterworth, Aaron Patterson, John Poulin, John Backus from BlockScore, Ben Murphy, Marien, Arthur Neves from GitHub, Spyros Livathinos from Zendesk, Arnaud Germis, Nate Clark, and John Colvin reported these vulnerabilities.

Impact:   A remote user can modify data on the target system.

A remote user can cause denial of service conditions.

A remote user can bypass security controls on the target system.

A remote user can determine passwords in certain cases.

A remote user can obtain potentially sensitive information on the target system.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Ruby software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix (3.2.22.1, 4.1.14.1, 4.2.5.1; rails-html-sanitizer 1.0.3).

The vendor's advisory is available at:

http://weblog.rubyonrails.org/2016/1/25/Rails-5-0-0-beta1-1-4-2-5-1-4-1-14-1-3-2-22-1-and-rails-html-sanitizer-1-0-3-have-been-released/

Vendor URL:  weblog.rubyonrails.org/2016/1/25/Rails-5-0-0-beta1-1-4-2-5-1-4-1-14-1-3-2-22-1-and-rails-html-sanitizer-1-0-3-have-been-released/ (Links to External Site)
Cause:   Access control error, Input validation error, Resource error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 15 2016 (Red Hat Issues Fix) Rails Multiple Bugs Let Remote Users Determine Passwords, Modify Records, Bypass Security Restrictions, Deny Service, and Conduct Cross-Site Scripting Attacks
Red Hat has issued a fix for ruby193 for Red Hat Enterprise Linux 6, 6.6, 6.7, 7, 7.1, and 7.2.
Jun 30 2016 (IBM Issues Fix for IBM Tivoli Endpoint Manager for Software Use Analysis) Rails Multiple Bugs Let Remote Users Determine Passwords, Modify Records, Bypass Security Restrictions, Deny Service, and Conduct Cross-Site Scripting Attacks
IBM has issued a fix for IBM Tivoli Endpoint Manager for Software Use Analysis.
Jun 30 2016 (IBM Issues Fix for IBM License Metric Tool) Rails Multiple Bugs Let Remote Users Determine Passwords, Modify Records, Bypass Security Restrictions, Deny Service, and Conduct Cross-Site Scripting Attacks
IBM has issued a fix for IBM License Metric Tool.
Mar 28 2017 (Apple Issues Fix for Apple macOS Server) Rails Multiple Bugs Let Remote Users Determine Passwords, Modify Records, Bypass Security Restrictions, Deny Service, and Conduct Cross-Site Scripting Attacks
Apple has issued a fix for Apple macOS Server.



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