Bug 877628 (CVE-2012-5841) - CVE-2012-5841 Mozilla: Improper security filtering for cross-origin wrappers (MFSA 2012-100)
Summary: CVE-2012-5841 Mozilla: Improper security filtering for cross-origin wrappers ...
Status: CLOSED ERRATA
Alias: CVE-2012-5841
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20121120,repor...
Keywords: Security
Depends On:
Blocks: 873088
TreeView+ depends on / blocked
 
Reported: 2012-11-17 11:38 UTC by Huzaifa S. Sidhpurwala
Modified: 2013-01-16 17:05 UTC (History)
4 users (show)

(edit)
Clone Of:
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Last Closed: 2013-01-16 17:05:28 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:1482 normal SHIPPED_LIVE Critical: firefox security update 2012-11-21 03:10:31 UTC
Red Hat Product Errata RHSA-2012:1483 normal SHIPPED_LIVE Critical: thunderbird security update 2012-11-21 02:49:59 UTC

Description Huzaifa S. Sidhpurwala 2012-11-17 11:38:30 UTC
Mozilla developer Bobby Holley reported that security wrappers filter at the time of property access, but once a function is returned, the caller can use this function without further security checks. This affects cross-origin wrappers, allowing for write actions on objects when only read actions should be properly allowed. This can lead to cross-site scripting (XSS) attacks.

In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.


External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-100.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Bobby Holley as the original reporter.

Comment 1 errata-xmlrpc 2012-11-20 21:51:44 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2012:1483 https://rhn.redhat.com/errata/RHSA-2012-1483.html

Comment 2 errata-xmlrpc 2012-11-20 22:12:18 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1482 https://rhn.redhat.com/errata/RHSA-2012-1482.html


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