Bug 188833

Summary:	CVE-2006-1731 Cross-site scripting using .valueOf.call()
Product:	[Fedora] Fedora	Reporter:	Josh Bressers <bressers>
Component:	firefox	Assignee:	Christopher Aillon <caillon>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5	CC:	djuran, security-response-team, wtogami
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	reported=20060412,source=mozilla,embargo=20060414,impact=moderate
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-04-27 12:55:14 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 03:29:47 UTC

Cross-site scripting using .valueOf.call()


moz_bug_r_a4 discovered that .valueOf.call() and .valueOf.apply() when
called with no arguments were returning the Object class prototype rather
than the caller's global window object. When called on a reachable property
of  another  window this provides a hook to get around the same-origin
protection, allowing an attacker to inject script into another window.

Cross-site script injection can be used to steal confidential data such as
cookies or passwords, or perform actions on the user's behalf. It can also
be used to alter the content of the other window which could be used to fool
a user into trusting bogus information or downloaded content.

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 a fixed version can be installed.

References

[1]https://bugzilla.mozilla.org/show_bug.cgi?id=327194
[2]https://bugzilla.mozilla.org/show_bug.cgi?id=290488


This issue also affects FC4

Comment 1 Josh Bressers 2006-04-27 12:55:14 UTC

These issues have been resolved in FEDORA-2006-411 for FC5 and FEDORA-2006-410
for FC4