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Bug 840212 - (CVE-2012-1959) CVE-2012-1959 Mozilla: Same-compartment Security Wrappers can be bypassed (MFSA 2012-49)
CVE-2012-1959 Mozilla: Same-compartment Security Wrappers can be bypassed (MF...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
urgent Severity urgent
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Assigned To: Red Hat Product Security
impact=critical,public=20120717,repor...
: Security
Depends On:
Blocks: 835033
  Show dependency treegraph
 
Reported: 2012-07-14 08:08 EDT by Huzaifa S. Sidhpurwala
Modified: 2012-07-18 03:30 EDT (History)
4 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2012-07-18 03:30:24 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Huzaifa S. Sidhpurwala 2012-07-14 08:08:37 EDT
Mozilla developer Bobby Holley found that same-compartment security wrappers (SCSW) can be bypassed by passing them to another compartment. Cross-compartment wrappers often do not go through SCSW, but have a filtering policy built into them. When an object is wrapped cross-compartment, the SCSW is stripped off and, when the object is read read back, it is not known that SCSW was previously present, resulting in a bypassing of SCSW. This could result in untrusted content having access to the XBL that implements browser functionality.

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-49.html

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Mozilla developer Bobby Holley as the original reporter of this issue.
Comment 1 errata-xmlrpc 2012-07-17 14:57:51 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1089 https://rhn.redhat.com/errata/RHSA-2012-1089.html
Comment 2 errata-xmlrpc 2012-07-17 15:28:16 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1088 https://rhn.redhat.com/errata/RHSA-2012-1088.html

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