Directory Services in Apple Mac OS X 10.5 through 10.5.4, when Active Directory is used, allows attackers to enumerate user names via wildcard characters in the Login Window.

Multiple buffer underflows in the (1) LZWDecode, (2) LZWDecodeCompat, and (3) LZWDecodeVector functions in tif_lzw.c in the LZW decoder in LibTIFF 3.8.2 and earlier allow context-dependent attackers to execute arbitrary code via a crafted TIFF file, related to improper handling of the CODE_CLEAR code.

mDNSResponder in the Bonjour Namespace Provider in Apple Bonjour for Windows before 1.0.5 allows attackers to cause a denial of service (NULL pointer dereference and application crash) by resolving a crafted .local domain name that contains a long label.

QuickLook in Apple Mac OS X 10.4.11 and 10.5.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted Microsoft Office file, related to insufficient “bounds checking.”

The Repair Permissions tool in Disk Utility in Apple Mac OS X 10.4.11 adds the setuid bit to the emacs executable file, which allows local users to gain privileges by executing commands within emacs.