Quartz Composer in Apple Mac OS X before 10.7.4, when the RSS Visualizer screensaver is enabled, allows physically proximate attackers to bypass screen locking and launch a Safari process via unspecified vectors.

Integer overflow in the Security Framework in Apple Mac OS X before 10.7.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted input.

Buffer overflow in QuickTime in Apple Mac OS X before 10.7.4 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted audio sample tables in a movie file that is progressively downloaded.

Race condition in LoginUIFramework in Apple Mac OS X 10.7.x before 10.7.4, when the Guest account is enabled, allows physically proximate attackers to login to arbitrary accounts by entering the account name and no password.

Race condition in the initialization routine in blued in Bluetooth in Apple Mac OS X before 10.7.4 allows local users to gain privileges via vectors involving a temporary file.

libsecurity in Apple Mac OS X before 10.7.4 does not properly restrict the length of RSA keys within X.509 certificates, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by conducting a spoofing or network-sniffing attack during communication with a site that uses a short key.

Use-after-free vulnerability in QuickTime in Apple Mac OS X 10.7.x before 10.7.4 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted movie file with JPEG2000 encoding.

libsecurity in Apple Mac OS X before 10.7.4 accesses uninitialized memory locations during the processing of X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted certificate.

WebDAV Sharing in Apple Mac OS X 10.7.x before 10.7.3 does not properly perform authentication, which allows local users to gain privileges by leveraging access to (1) the server or (2) a bound directory.

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.