About the Safari 4 Public Beta Security Update

This document describes the Safari 4 Public Beta Security Update.

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see "How to use the Apple Product Security PGP Key."

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other Security Updates, see "Apple Security Updates."

Safari 4 Public Beta Security Update

• libxml

  CVE-ID: CVE-2008-3529

  Available for: 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, Windows XP or 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 libxml's handling of long entity names. 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. This issue is addressed in Safari 3.2.3.

• Safari

  CVE-ID: CVE-2009-0162

  Available for: Mac OS X v10.5.7, Mac OS X Server v10.5.7, Windows XP or Vista

  Impact: Accessing a maliciously crafted "feed:" URL may lead to arbitrary code execution

  Description: Multiple input validation issues exist in Safari's handling of "feed:" URLs. Accessing a maliciously crafted "feed:" URL may lead to the execution of arbitrary JavaScript. This update addresses the issues by performing additional validation of "feed:" URLs. These issues do not affect systems prior to Mac OS X v10.5. These issues are addressed in Safari 3.2.3. Credit to Billy Rios of Microsoft Vulnerability Research (MSVR), and Alfredo Melloni for reporting these issues.

• WebKit

  CVE-ID: CVE-2009-0945

  Available for: 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, Windows XP or Vista

  Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

  Description: A memory corruption issue exists in WebKit's handling of SVGList objects. Visiting a maliciously crafted website may lead to arbitrary code execution. This update addresses the issue through improved bounds checking. This issue is addressed in Safari 3.2.3. Credit to Nils working with TippingPoint's Zero Day Initiative for reporting this issue.