Bug 863620 (CVE-2012-3989) - CVE-2012-3989 Mozilla: Crash with invalid cast when using instanceof operator (MFSA 2012-80)
Summary: CVE-2012-3989 Mozilla: Crash with invalid cast when using instanceof operator...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2012-3989
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 852611
TreeView+ depends on / blocked
 
Reported: 2012-10-06 05:06 UTC by Huzaifa S. Sidhpurwala
Modified: 2023-05-11 19:40 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2012-10-06 05:07:10 UTC
Embargoed:

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Description Huzaifa S. Sidhpurwala 2012-10-06 05:06:06 UTC 
Mozilla community member Ms2ger reported a crash due to an invalid cast when using the instanceof operator on certain types of JavaScript objects. This can lead to a potentially exploitable crash.

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.

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-80.html

Acknowledgements:
Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Ms2ger as the original reporter.
Comment 1 Huzaifa S. Sidhpurwala 2012-10-06 05:07:10 UTC 
Statement:

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