[NEWS] Mac OS X Dashboard Arbitrary Widget Injection

From: SecuriTeam (support_at_securiteam.com)
Date: 05/19/05

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Date: 19 May 2005 16:11:56 +0200

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      Mac OS X Dashboard Arbitrary Widget Injection
    ------------------------------------------------------------------------

    SUMMARY

    "Mac OS X is the latest version of the Mac OS, the operating system
    software for Macintosh computers. It consists of two main parts: Darwin,
    an open source UNIX-like environment which is based on the BSD source tree
    and the Mach microkernel, adapted and further developed by Apple Computer
    with involvement from independent developers; and a proprietary GUI named
    Aqua, developed by Apple."

    Combination of Safari and Dashboard in OS X are vulnerable to arbitrary
    widget injection, exploiting this vulnerability may lead to arbitrary code
    execution and allows malicious attacker to gain full control over the
    system.

    DETAILS

    Vulnerable Systems:
     * Mac OS X version 10.4

    Immune Systems:
     * Mac OS X version 10.4.1 or newer

    Dashboard in combination with Safari in Mac OS X contains a flaw that may
    allow a remote attacker to inject arbitrary widgets. The issue is
    triggered when the 'Open "safe" files after downloading' option in Safari
    is enabled. It is possible that the flaw may allow a remote attacker to
    create a malicious web page that contains an embedded META tag to trigger
    Safari to download a malicious widget, which would be automatically
    installed under the /Library/Widgets or ~/Library/Widgets directory
    without any user intervention resulting in a loss of integrity.

    Workaround:
    Disable the 'Open "safe" files after downloading' option in Safari.

    ADDITIONAL INFORMATION

    The original article can be found at:
    <http://stephan.com/widgets/zaptastic/>
    http://stephan.com/widgets/zaptastic/,
    <http://www1.cs.columbia.edu/~aaron/files/widgets/>
    http://www1.cs.columbia.edu/~aaron/files/widgets/ and
    <http://www.osvdb.org/16499> http://www.osvdb.org/16499

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