Bug 1277346 (CVE-2015-7193)

Summary: CVE-2015-7193 Mozilla: CORS preflight is bypassed when non-standard Content-Type headers are received (MFSA 2015-127)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: cschalle, jhorak, security-response-team, stransky
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-26 15:11:11 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1275590    

Description Huzaifa S. Sidhpurwala 2015-11-03 05:57:35 UTC 
Security researcher Shinto K Anto reported an issue with cross-origin resource sharing (CORS) "preflight" requests when receiving certain Content-Type headers. This is due to an error in implementation resulting in trying to process multiple media types when they are returned in the Content-Type headers from a server. This is disallowed in the CORS specification and results in a simple instead of a "preflight" request, leading to potential same-origin policy violation. 


External Reference:

https://www.mozilla.org/security/announce/2015/mfsa2015-127.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Shinto K Anto as the original reporter.
Comment 1 errata-xmlrpc 2015-11-04 12:12:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2015:1982 https://rhn.redhat.com/errata/RHSA-2015-1982.html
Comment 2 errata-xmlrpc 2015-11-26 13:41:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2015:2519 https://rhn.redhat.com/errata/RHSA-2015-2519.html