Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and earlier allows local users to cause a denial of service (kernel memory corruption) by simultaneously executing the same HFSSETPKGEXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFSGETBOOTINFO fcntl calls.
Event Monitor in Apple Mac OS X before 10.6.3 does not properly validate hostnames of SSH clients, which allows remote attackers to cause a denial of service (arbitrary client blacklisting) via a crafted DNS PTR record, related to a "plist injection issue."
SFLServer in OS Services in Apple Mac OS X before 10.6.3 allows local users to gain privileges via vectors related to use of wheel group membership during access to the home directories of user accounts.
Directory Services in Apple Mac OS X before 10.6.3 does not properly perform authorization during processing of record names, which allows local users to gain privileges via unspecified vectors.
Multiple stack-based buffer overflows in iChat Server in Apple Mac OS X Server before 10.6.3 allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via unspecified vectors.
AFP Server in Apple Mac OS X before 10.6.3 does not prevent guest use of AFP shares when guest access is disabled, which allows remote attackers to bypass intended access restrictions via a mount request.
The acceptconnections function in the virtual private network daemon (vpnd) in Apple Mac OS X 10.5 before 10.5.4 allows remote attackers to cause a denial of service (divide-by-zero error and daemon crash) via a crafted load balancing packet to UDP port 4112.
The Aqua Look and Feel for Java implementation in Java 1.5 on Mac OS X 10.5 allows remote attackers to execute arbitrary code via a call to the undocumented apple.laf.CColourUIResource constructor with a crafted value in the first argument, which is dereferenced as a pointer.
iChat in Apple Mac OS X 10.5 before 10.5.7 disables SSL for AOL Instant Messenger (AIM) communication in certain circumstances that are inconsistent with the Require SSL setting, which allows remote attackers to obtain sensitive information by sniffing the network.
The screen saver in Dock in Apple Mac OS X 10.5 before 10.5.8 does not prevent four-finger Multi-Touch gestures, which allows physically proximate attackers to bypass locking and "manage applications or use Expose" via unspecified vectors.