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Category:   Application (Web Browser)  >   Apple Safari Vendors:   Apple Computer
(Apple Issues Fix for Safari) Mac OS X WebCore Bugs Permit Cross-Domain Scripting Attacks and Java Settings Bypass
SecurityTracker Alert ID:  1018497
SecurityTracker URL:  http://securitytracker.com/id/1018497
CVE Reference:   CVE-2007-0478, CVE-2007-2408, CVE-2007-2409, CVE-2007-2410   (Links to External Site)
Date:  Aug 1 2007
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.0.2 and prior versions
Description:   A vulnerability was reported in Mac OS X WebCore. A remote user can cause Java applets to be executed when Java is disabled. A remote user can conduct cross-site scripting attacks. A remote user can view certain URLs. Apple Safari is affected.

A remote user can create a specially crafted Java applet that, when loaded by the target user, will run even if Java is disabled [CVE-2007-2408]. Apple credits Rhys Kidd and Scott Wilde with reporting this vulnerability.

WebCore does not properly filter HTML code from user-supplied HTML comments within an HTML Title before displaying the input [CVE-2007-0478]. A remote user can create specially crafted HTML that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will be able to access the target user's cookies (including authentication cookies), if any, associated with an arbitrary site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can create a popup window that can read the URL being viewed in the parent window [CVE-2007-2409]. Apple credits Secunia Research with reporting this vulnerability.

WebCore does not properly clear properties of certain global objects when navigating to a new URL within the same window [CVE-2007-2410]. A remote user can exploit this to conduct cross-site scripting attacks.

Impact:   A remote user can create a Java applet that, when loaded by the target user, will run even if Java is disabled.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with an arbitrary site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can view certain URLs.

Solution:   Apple has issued a fix as part of Safari 3 Beta Update 3.0.3, available via the Apple Software Update application, or Apple's Safari download site at:

http://www.apple.com/safari/download/

For Mac OS X
The download file is named: "Safari3Beta.dmg"
Its SHA-1 digest is: d4fa5d950812de95d9c7fc5b8d24d0fef2daa057

Safari for Windows XP or Vista
The download file is named: "SafariSetup.exe"
Its SHA-1 digest is: c141abd6ff0bfae9bc40e23dd33110c0d48816ad

Safari+QuickTime for Windows XP or Vista
The download file is named: "SafariQuickTimeSetup.exe"
Its SHA-1 digest is: a2a2710e80925e46804d47cfc896bfffc3cab48b

The Apple advisory is available at:

http://docs.info.apple.com/article.html?artnum=306174

Vendor URL:  docs.info.apple.com/article.html?artnum=306174 (Links to External Site)
Cause:   Access control error, Input validation error, State error
Underlying OS:   UNIX (OS X), Windows (Vista), Windows (XP)

Message History:   This archive entry is a follow-up to the message listed below.
Aug 1 2007 Mac OS X WebCore Bugs Permit Cross-Domain Scripting Attacks and Java Settings Bypass



 Source Message Contents

Date:  Tue, 31 Jul 2007 17:24:29 -0700
Subject:  APPLE-SA-2007-07-31 Safari 3 Beta Update 3.0.3


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2007-07-31 Safari 3 Beta Update 3.0.3

Safari 3 Beta Update 3.0.3 is now available and addresses the
following issues:

Safari
CVE-ID: CVE-2007-3743
Available for: Windows XP or Vista
Impact: Adding bookmarks may lead to an unexpected application
termination or arbitrary code execution
Description: A stack buffer overflow vulnerability exists in Safari's
bookmark handling. By enticing a user to add a bookmark with an
overlong title, an attacker may trigger the issue which may lead to
an unexpected application termination or arbitrary code execution.
This update addresses the issue by performing proper bounds checking.
This issue does not affect Mac OS X systems.

WebKit
CVE-ID: CVE-2007-2408
Available for: Mac OS X v10.4.9 or later, Windows XP or Vista
Impact: Visiting a malicious website may allow Java applets to load
and run even when Java is disabled
Description: Safari provides an "Enable Java" preference, which when
unchecked should prevent the loading of Java applets. By default,
Java applets are allowed to be loaded. Navigating to a maliciously
crafted web page may allow a Java applet to be loaded without
checking the preference. This update addresses the issue through a
stricter check of the "Enable Java" preference. Credit to Rhys Kidd
and Scott Wilde for reporting this issue.

WebKit
CVE-ID: CVE-2007-3742
Available for: Mac OS X v10.4.9 or later, Windows XP or Vista
Impact: Look-alike characters in a URL could be used to masquerade a
website
Description: The International Domain Name (IDN) support and Unicode
fonts embedded in Safari could be used to create a URL which contains
look-alike characters. These could be used in a malicious web site to
direct the user to a spoofed site that visually appears to be a
legitimate domain. This update addresses the issue by through an
improved domain name validity check. Credit to Tomohito Yoshino
of Business Architects Inc. for reporting this issue.

WebKit
CVE-ID: CVE-2007-3944
Available for: Mac OS X v10.4.9 or later, Windows XP or Vista
Impact: Viewing a maliciously crafted web page may lead to arbitrary
code execution
Description: Heap buffer overflows exist in the Perl Compatible
Regular Expressions (PCRE) library used by the JavaScript engine in
Safari. By enticing a user to visit a maliciously crafted web page,
an attacker may trigger the issues, which may lead to arbitrary code
execution. This update addresses the issues by performing additional
validation of JavaScript regular expressions. Credit to Charlie
Miller and Jake Honoroff of Independent Security Evaluators for
reporting these issues.

Safari 3 Beta Update 3.0.3 is available via the Apple Software Update
application, or Apple's Safari download site at:
http://www.apple.com/safari/download/

For Mac OS X
The download file is named:  "Safari3Beta.dmg"
Its SHA-1 digest is:  d4fa5d950812de95d9c7fc5b8d24d0fef2daa057

Safari for Windows XP or Vista
The download file is named:  "SafariSetup.exe"
Its SHA-1 digest is:  c141abd6ff0bfae9bc40e23dd33110c0d48816ad

Safari+QuickTime for Windows XP or Vista
The download file is named:  "SafariQuickTimeSetup.exe"
Its SHA-1 digest is:  a2a2710e80925e46804d47cfc896bfffc3cab48b

This message is signed with Apple's Product Security PGP key,
and details are available at:
http://www.apple.com/support/security/pgp/

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