Apple Security Advisory 2012-02-01-1 - Apple has addressed 48 security vulnerabilities. These issues existed in packages such as Address Book, Apache, CFNetwork, ColorSync, CoreAudio, CoreMedia, CoreText, curl and much more.
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Apple Security Advisory 2011-10-11-1 - iTunes 10.5 has been released and addresses CoreFoundation, ColorSync, CoreAudio, CoreMedia, ImageIO, WebKit, and various other vulnerabilities.
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Apple Security Advisory 2011-07-20-1 - A large amount of security issues have been addressed in Safari versions 5.1 and 5.0.6. These range from cross site scripting, possible arbitrary code execution, accidental trust in a disable root certificate, buffer and integer overflows, and more.
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Zero Day Initiative Advisory 11-228 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari on Windows and multiple applications on OSX. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The flaw exists within the ColorSync component which is used when handling image files containing embedded ICC data. When handling the ncl2 tag the process miscalculates an integer value used in a memory allocation. This buffer is later used as a destination when copying user controlled data. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the user running the application.
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