Integer overflow in libresolv in Apple Mac OS X before 10.7.3 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) via crafted DNS data.

Internet Sharing in Apple Mac OS X before 10.7.3 does not preserve the Wi-Fi configuration across software updates, which allows remote attackers to obtain sensitive information by leveraging the lack of a WEP password for a Wi-Fi network.

CoreUI in Apple Mac OS X 10.7.x before 10.7.3 does not properly restrict the allocation of stack memory, which allows remote attackers to execute arbitrary code or cause a denial of service (memory consumption and application crash) via a long URL.

Use-after-free vulnerability in CoreText in Apple Mac OS X before 10.7.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted embedded font in a document.

Heap-based buffer overflow in CoreMedia in Apple Mac OS X before 10.7.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted movie file with H.264 encoding.

CFNetwork in Apple Mac OS X 10.7.x before 10.7.3 does not properly construct request headers during parsing of URLs, which allows remote attackers to obtain sensitive information via a malformed URL.

Apple Type Services (ATS) in Apple Mac OS X before 10.7.3 does not properly manage memory for data-font files, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted font that is accessed by Font Book.

Address Book in Apple Mac OS X before 10.7.3 automatically switches to unencrypted sessions upon failure of encrypted connections, which allows remote attackers to read CardDAV data by terminating an encrypted connection and then sniffing the network.