Bug 188860

Summary:	CVE-2006-1733 Accessing XBL compilation scope via valueOf.call()
Product:	[Fedora] Fedora	Reporter:	Josh Bressers <bressers>
Component:	thunderbird	Assignee:	Christopher Aillon <caillon>
Status:	CLOSED INSUFFICIENT_DATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5	CC:	mcepl, mcepl, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	reported=20060412,source=mozilla,embargo=yes,impact=moderate
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-08-28 15:02:39 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Josh Bressers 2006-04-13 04:02:15 UTC

Accessing XBL compilation scope via valueOf.call()


moz_bug_r_a4 discovered that the compilation scope of privileged built-in
XBL bindings was not fully protected from web content and could be accessed
by calling valueOf.call() and valueOf.apply() on a method of that binding.
This could then be used to compile and run attacker-supplied JavaScript,
giving it the privileges of the binding which would allow an attacker to
install malware such as viruses and password sniffers.

shutdown  reported an alternate way to get to XBL compilation scope by
inserting an XBL method into the DOM's document.body prototype chain.

Note: Thunderbird shares the JavaScript engine with Firefox and could be
vulnerable if JavaScript were to be enabled in mail. This is not the default
setting and we strongly discourage users from running JavaScript in mail.

Workaround

Disable JavaScript until you can upgrade to a fixed version.

References

[1]https://bugzilla.mozilla.org/show_bug.cgi?id=312871
[2]https://bugzilla.mozilla.org/show_bug.cgi?id=313236
[3]https://bugzilla.mozilla.org/show_bug.cgi?id=313375


This issue also affects FC4

Comment 1 Josh Bressers 2006-04-24 13:09:17 UTC

Lifting embargo

Comment 2 Matěj Cepl 2007-07-18 17:32:55 UTC

Fedora Core 5 is no longer supported, could you please reproduce this with the
updated version of the currently supported distribution (Fedora Core 6, or
Fedora 7, or Rawhide)? If this issue turns out to still be reproducible, please
let us know in this bug report.  If after a month's time we have not heard back
from you, we will have to close this bug as CANTFIX.

Setting status to NEEDINFO, and awaiting information from the reporter.

Thanks in advance.

Comment 3 Matěj Cepl 2007-08-28 15:02:39 UTC

We haven't got any reply to the last question about reproducability of the bug
with Fedora Core 6, Fedora 7, or Fedora devel. Mass closing this bug, so if you
have new information that would help us fix this bug, please reopen it with the
additional information.