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TITLE:
Mozilla Products Addon Chrome-Loaded "about:blank" Cross-Context
Scripting

SECUNIA ADVISORY ID:
SA26288

VERIFY ADVISORY:
http://secunia.com/advisories/26288/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, System access

WHERE:
>From remote

REVISION:
1.1 originally posted 2007-07-31

SOFTWARE:
Mozilla Firefox 2.0.x
http://secunia.com/product/12434/
Mozilla SeaMonkey 1.1.x
http://secunia.com/product/14383/
Mozilla Thunderbird 2.x
http://secunia.com/product/14070/

DESCRIPTION:
A vulnerability has been reported in Mozilla products, which
potentially can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to an error within the handling of
"about:blank" pages loaded by chrome in an addon. This can be
exploited to execute script code under chrome privileges by e.g.
clicking on a link opened in an "about:blank" window created and
populated in a certain ways by an addon.

Successful exploitation requires that certain addons are installed.

The vulnerability is reported in the following products and
versions:
* Firefox 2.0.0.5
* Thunderbird 2.0.0.5
* SeaMonkey 1.1.3

SOLUTION:
Update to the latest versions:

Firefox:
Update to version 2.0.0.6.
http://www.mozilla.com/en-US/firefox/

Thunderbird:
Fixed in the upcoming version 2.0.0.6.
http://www.mozilla.com/en-US/thunderbird/

SeaMonkey:
Fixed in the upcoming version 1.1.4.
http://www.mozilla.org/projects/seamonkey/

NOTE: With version 2.0.0.6, changes that prevent exploitation of a
URI handling vulnerability in Microsoft Windows were applied to
Firefox and Thunderbird.

For more information:
SA26201

PROVIDED AND/OR DISCOVERED BY:
moz_bug_r_a4

CHANGELOG:
2007-07-31: Updated "Description". Added link to vendor advisory.

ORIGINAL ADVISORY:
http://www.mozilla.org/security/announce/2007/mfsa2007-26.html
http://www.mozilla.org/security/announce/2007/mfsa2007-27.html
https://bugzilla.mozilla.org/show_bug.cgi?id=388121

OTHER REFERENCES:
SA26201:
http://secunia.com/advisories/26201/

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
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clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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