The Screen Lock implementation in Apple Mac OS X before 10.9 does not immediately accept Keychain Status menu Lock Screen commands, and instead incorrectly relies on a certain timeout setting, which allows physically proximate attackers to obtain sensitive information by reading a screen that should have transitioned into the locked state.

The kernel in Apple Mac OS X before 10.9 does not properly check for errors during the processing of multicast Wi-Fi packets, which allows remote attackers to cause a denial of service (system crash) by leveraging presence in an 802.11 network's coverage area.

The Bluetooth USB host controller in Apple Mac OS X before 10.9 prematurely deletes interfaces, which allows local users to cause a denial of service (system crash) via a crafted application.

Directory Services in Apple Mac OS X before 10.8.5 Supplemental Update allows local users to bypass password-based authentication and modify arbitrary Directory Services records via unspecified vectors.

Buffer overflow in CoreGraphics in Apple Mac OS X before 10.8.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted JBIG2 data in a PDF document.

Screen Lock in Apple Mac OS X before 10.8.5 does not properly track sessions, which allows remote authenticated users to bypass locking by leveraging screen-sharing access.

Installer in Apple Mac OS X before 10.8.5 provides an option to continue a package's installation after encountering a revoked certificate, which might allow user-assisted remote attackers to execute arbitrary code via a crafted package.

Buffer overflow in ImageIO in Apple Mac OS X before 10.8.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted JPEG2000 data in a PDF document.

QuickTime in Apple Mac OS X before 10.8.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted idsc atom in a QuickTime movie file.

Power Management in Apple Mac OS X before 10.8.5 does not properly perform locking upon occurrences of a power assertion, which allows physically proximate attackers to bypass intended access restrictions by visiting an unattended workstation on which a locking failure had prevented the startup of the screen saver.