(Vendor Issues Fix) Apple Safari 'runscript' Function Lets Remote Users Execute Code
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SecurityTracker Alert ID: 1010253 |
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SecurityTracker URL: http://securitytracker.com/id/1010253
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CVE Reference:
CAN-2004-0486
(Links to External Site)
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Date: May 22 2004
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Impact:
Execution of arbitrary code via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A vulnerability was reported in Apple Mac OS X Safari browser in the runscript function of the 'Help.app' application. A remote user can create HTML that, when loaded by the target user, will execute code on the target user's system.
It is reported that a remote user can create an HTML link that, when loaded, will instruct the help application to open a specified application on the target user's computer.
It is also reported that Safari browser stores '.dmg' files in a known location. As a result, a remote user may be able to create HTML that downloads a script within a DMG file and then calls the Help application to execute the script from the known location.
A demonstration exploit URL is of the following format:
help:runscript=MacHelp.help/Contents/Resources/English.lproj/shrd/OpnApp.scpt string='[location of file]'">
A demonstration exploit is available at:
http://www.insecure.ws/safari/0x04_test.html
The original advisory is available at:
http://fundisom.com/owned/warning
The vendor was reportedly notified on February 23, 2004.
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Impact:
A remote user can create HTML that, when loaded by the target user, will execute specified applications on the target user's system.
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Solution:
The vendor has issued a fix as part of Security Update 2004-05-24 for Mac OS X 10.2.8 and 10.3.3. Software updates for Mac OS X are available via:
- Software Update preferences
- Apple Downloads:
http://www.apple.com/swupdates/
Apple credits lixlpixel with reporting this flaw.
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Vendor URL: www.apple.com/ (Links to External Site)
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Cause:
Access control error, State error
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Underlying OS:
UNIX (OS X)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Fri, 21 May 2004 21:21:13 -0400
Subject: Security Update 2004-05-24 for Mac OS X
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> Security Update 2004-05-24 for Mac OS X 10.3.3 "Panther" and Mac OS X 10.3.3 Server
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> HelpViewer: Fixes CAN-2004-0486 to ensure that HelpViewer will only process scripts that
> it initiated. Credit to lixlpixel <me@lixlpixel.com> for reporting this issue.
> Security Update 2004-05-24 for Mac OS X 10.2.8 "Jaguar" and Mac OS X 10.2.8 Server
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> HelpViewer: Fixes CAN-2004-0486 to ensure that HelpViewer will only process scripts that
> it initiated. Credit to lixlpixel <me@lixlpixel.com> for reporting this issue.
>
> Terminal: Fixes CAN-2004-0485 to improve URL processing within Terminal. Credit to René
> Puls <rpuls@gmx.net> for reporting this issue.
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