Mac OS X ICU Character Encoding Bug Lets Remote Users Bypass Content Filters
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SecurityTracker Alert ID: 1020139 |
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SecurityTracker URL: http://securitytracker.com/id/1020139
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CVE Reference:
CVE-2008-1036
(Links to External Site)
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Date: May 29 2008
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Impact:
Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 10.5.3
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Description:
A vulnerability was reported in Mac OS X in the processing of certain character encodings. A remote user can bypass content filters.
The International Components for Unicode (ICU) component does not properly handle certain character encodings.
A remote user can create character sequences that may not appear in the converted output, allowing the remote user to create content that bypasses content filters. This may also allow cross-site scripting attacks.
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Impact:
A remote user can create content that may bypass content filters or permit cross-site scripting attacks.
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Solution:
The vendor has issued a fix as part of Security Update 2008-003 and Mac OS X v10.5.3, available from the Software Update pane in System Preferences, or Apple's Software Downloads web site at:
http://www.apple.com/support/downloads/
The Software Update utility will present the update that applies to your system configuration. Only one is needed, either Security Update 2008-003 or Mac OS X v10.5.3.
For Mac OS X v10.5.2
The download file is named: "MacOSXUpd10.5.3.dmg"
Its SHA-1 digest is: 017ef905e5653b04e2455da261e804a72bf40139
For Mac OS X v10.5 - v10.5.1
The download file is named: "MacOSXUpdCombo10.5.3.dmg"
Its SHA-1 digest is: 69acd7399de25f1548675d660fdf24eb401e3de3
For Mac OS X Server v10.5.2
The download file is named: "MacOSXServerUpd10.5.3.dmg"
Its SHA-1 digest is: 336c9dceca724eab0b8c9db3943be3f9ecf244a4
For Mac OS X Server v10.5 - v10.5.1
The download file is named: "MacOSXServerUpdCombo10.5.3.dmg"
Its SHA-1 digest is: fdb2187d19ce21caecd3c3ba6b6fa6f65c9c3a4f
For Mac OS X v10.4.11 (Intel)
The download file is named: "SecUpd2008-003Intel.dmg"
Its SHA-1 digest is: 8f84d2f757c2fb277b139f72ef501dc894620e97
For Mac OS X v10.4.11 (PowerPC)
The download file is named: "SecUpd2008-003PPC.dmg"
Its SHA-1 digest is: 51e98d988c5bb09d4b1052199d90a9d65af7c8e7
For Mac OS X Server v10.4.11 (Universal)
The download file is named: "SecUpdSrvr2008-003Univ.dmg"
Its SHA-1 digest is: 337a05956b5a6e962b286a91beee9eb217a0175c
For Mac OS X Server v10.4.11 (PowerPC)
The download file is named: "SecUpdSrvr2008-003PPC.dmg"
Its SHA-1 digest is: 94cab2b4e5d26a284c5d91d0fe4dc20b4e9cfc97
The vendor's advisory is available at:
http://support.apple.com/kb/HT1897
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Vendor URL: support.apple.com/kb/HT1897 (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Wed, 28 May 2008 15:59:23 -0700
Subject: APPLE-SA-2008-05-28 Security Update 2008-003 and Mac OS X v10.5.3
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International Components for Unicode
CVE-ID: CVE-2008-1036
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11,
Mac OS X v10.5 through v10.5.2, Mac OS X Server v10.5 through v10.5.2
Impact: Visiting certain web sites may result in the disclosure of
sensitive information
Description: A conversion issue exists in ICU's handling of certain
character encodings. Particular invalid character sequences may not
appear in the converted output, and this can affect content filters.
Visiting a maliciously crafted web site may lead to cross site
scripting and the disclosure of sensitive information. This update
addresses the issue by replacing invalid character sequences with a
fallback character.
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