Bug 865283 – CVE-2012-4192 Mozilla: defaultValue security checks not applied (firefox-16) (MFSA 2012-89)

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 865283 - (CVE-2012-4192) CVE-2012-4192 Mozilla: defaultValue security checks not applied (firefox-16) (MFSA 2012-89)

Summary:	CVE-2012-4192 Mozilla: defaultValue security checks not applied (firefox-16) ...

Status:	CLOSED NOTABUG

Aliases:	CVE-2012-4192

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	urgent Severity urgent
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=critical,public=20121011,repor...
Keywords:	Security

Depends On:
Blocks:	865235
	Show dependency tree / graph

Reported:	2012-10-11 02:34 EDT by Huzaifa S. Sidhpurwala
Modified:	2012-10-11 16:49 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2012-10-11 02:35:05 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Huzaifa S. Sidhpurwala 2012-10-11 02:34:31 EDT

Mozilla security researcher moz_bug_r_a4 reported a regression where security wrappers are unwrapped without doing a security check in defaultValue(). This can allow for improper access access to the Location object and the potential for arbitrary code execution.

Security researcher Gareth Heyes also blogged about a Firefox 16 only symptom that is fixed in the updated versions.

This issue only affects Firefox 16.0 and does not affect the ESR version.

External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-89.html


Acknowledgements:

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

Statement:

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6

Note You need to log in before you can comment on or make changes to this bug.