Bug 1252282 - (CVE-2015-4478) CVE-2015-4478 Mozilla: Redefinition of non-configurable JavaScript object properties (MFSA 2015-82)
CVE-2015-4478 Mozilla: Redefinition of non-configurable JavaScript object pro...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20150811,repor...
: Security
Depends On:
Blocks: 1248359 1251515
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Reported: 2015-08-11 02:19 EDT by Huzaifa S. Sidhpurwala
Modified: 2015-08-24 23:55 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-08-24 23:54:22 EDT
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Description Huzaifa S. Sidhpurwala 2015-08-11 02:19:34 EDT
Security researcher André Bargull reported non-configurable properties on JavaScript objects can be redefined while parsing JSON in violation of the ECMAScript 6 standard. This allows malicious web content to bypass same-origin policy by editing these properties to arbitrary values.



External Reference:

https://www.mozilla.org/security/announce/2015/mfsa2015-82.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges André Bargull as the original reporter.
Comment 1 errata-xmlrpc 2015-08-11 15:48:17 EDT
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-2015:1586 https://rhn.redhat.com/errata/RHSA-2015-1586.html

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