Safari 4.0.3 for Windows and Mac OS X Fixes Stability, Compatibility and Security Issues
Article by George Norman
On 12 Aug 2009
Just the other week Apple released an update for the Leopard, mainly Mac OS X 10.5.8, which not only fixed quite a few security issues, but also updated the Mac OS X user to Safari 4.0.2 (even those running Safari 3 on their machine). Apple has now updated the Safari browser for version 4.0.3 and released it to Mac and Windows users.

The Safari 4.0.3 update is meant for Windows, Mac OS X 10.5 Leopard and Mac OS X 10.4 Tiger users that have the browser installed on their systems. By installing the update you can expect the browser to be more stable, compatible and secure. These are the “stability, compatibility and security” improvements included in Safari 4.0.3 that Apple detailed:

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Stability improvements for webpages that use the HTML 5 video tag
Stability improvements for 3rd-party plug-ins
Stability improvements for Top Sites
Fixes an issue that prevented some users from logging into iWork.com
Fixes an issue that could cause web content to be displayed in greyscale instead of color


And here are the security issues that the Safari 4.0.3 addresses:

CVE-2009-2468: CoreGraphics (Windows XP and Vista)
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: A heap buffer overflow exists in the drawing of long text strings. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking.

CVE-2009-2188: ImageIO (Windows XP and Vista)
Impact: Viewing a maliciously crafted image may lead to an unexpected application termination or arbitrary code execution
Description: A buffer overflow exists in the handling of EXIF metadata. Viewing a maliciously crafted image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking.

CVE-2009-2196: Safari (Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.7, Mac OS X Server v10.5.7, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Windows XP and Vista)
Impact: A maliciously crafted website may be promoted into Safari's Top Sites view
Description: Safari 4 introduced the Top Sites feature to provide an at-a-glance view of a user's favorite websites. It is possible for a malicious website to promote arbitrary sites into the Top Sites view through automated actions. This could be used to facilitate a phishing attack. This issue is addressed by preventing automated website visits from affecting the Top Sites list. Only websites that the user visits manually can be included in the Top Sites list. As a note, Safari enables fraudulent site detection by default. Since the introduction of the Top Sites feature, fraudulent sites are not displayed in the Top Sites view.

CVE-2009-2195: WebKit (Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.7, Mac OS X Server v10.5.7, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Windows XP and Vista)
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: A buffer overflow exists in WebKit's parsing of floating point numbers. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking.

CVE-2009-2200: WebKit (Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.7, Mac OS X Server v10.5.7, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Windows XP and Vista)
Impact: Visiting a maliciously crafted website and clicking "Go" when viewing a malicious plug-in dialog may lead to the disclosure of sensitive information
Description: WebKit allows the pluginspage attribute of the 'embed' element to reference file URLs. Clicking "Go" in the dialog that appears when an unknown plug-in type is referenced will redirect to the URL listed in the pluginspage attribute. This may allow a remote attacker to launch file URLs in Safari, and lead to the disclosure of sensitive information. This update addresses the issue by restricting the pluginspage URL scheme to http or https.

CVE-2009-2199: WebKit (Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.7, Mac OS X Server v10.5.7, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Windows XP and 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 website to direct the user to a spoofed site that visually appears to be a legitimate domain. This update addresses the issue by supplementing WebKit's list of known look-alike characters. Look-alike characters are rendered in Punycode in the address bar.

If you would like to get Safari 4.0.3, a download location is available here.



Tags: Apple, Safari 4.0.3, Update, Security, STability, Compatibility
About the author: George Norman
George is a news editor.
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Safari 4.0.3 for Windows and Mac OS X Fixes Stability, Compatibility and Security Issues
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