International Components for Unicode (ICU) 4.0, 3.6, and other 3.x versions, as used in Apple Mac OS X 10.5 before 10.5.7, iPhone OS 1.0 through 2.2.1, iPhone OS for iPod touch 1.1 through 2.2.1, Fedora 9 and 10, and possibly other operating systems, does not properly handle invalid byte sequences during Unicode conversion, which might allow remote attackers to conduct cross-site scripting (XSS) attacks.

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.

Stack-based buffer overflow in Apple Mac OS X 10.5 before 10.5.7 allows local users to gain privileges or cause a denial of service (application crash) by attempting to mount a crafted sparse disk image.

Apple Mac OS X 10.4.11 and 10.5 before 10.5.7 allows local users to gain privileges or cause a denial of service (application crash) by attempting to mount a crafted sparse disk image that triggers memory corruption.

CoreGraphics in Apple Mac OS X 10.4.11 and 10.5 before 10.5.7, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PDF file that triggers memory corruption.

CFNetwork in Apple Mac OS X 10.5 before 10.5.7 does not properly parse noncompliant Set-Cookie headers, which allows remote attackers to obtain sensitive information by sniffing the network for "secure cookies" that are sent over unencrypted HTTP connections.

Integer underflow in QuickDraw Manager in Apple Mac OS X 10.4.11 and 10.5 before 10.5.7, and Apple QuickTime before 7.6.2, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a PICT image with a crafted 0x77 Poly tag and a crafted length field, which triggers a heap-based buffer overflow.

Array index error in the xnu (Mach) kernel in Apple Mac OS X 10.5 before 10.5.7 allows local users to gain privileges or cause a denial of service (system shutdown) via unspecified vectors related to workqueues.

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 HFS_SET_PKG_EXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.

Multiple memory leaks in XNU 1228.3.13 and earlier on Apple Mac OS X 10.5.6 and earlier allow local users to cause a denial of service (kernel memory consumption) via a crafted (1) SYS_add_profil or (2) SYS___mac_getfsstat system call.

Heap-based buffer overflow in the AppleTalk networking stack in XNU 1228.3.13 and earlier on Apple Mac OS X 10.5.6 and earlier allows remote attackers to cause a denial of service (system crash) via a ZIP NOTIFY (aka ZIPOP_NOTIFY) packet that overwrites a certain ifPort structure member.

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 HFS_GET_BOOT_INFO fcntl calls.

Managed Client in Apple Mac OS X before 10.5.6 sometimes misidentifies a system when installing per-host configuration settings, which allows context-dependent attackers to have an unspecified impact by leveraging unintended settings, as demonstrated by the screen saver lock setting.

Apple Type Services (ATS) in Apple Mac OS X 10.5 before 10.5.6 allows remote attackers to cause a denial of service (infinite loop) via a crafted embedded font in a PDF file.

Incomplete blacklist vulnerability in the Quarantine feature in CoreTypes in Apple Mac OS X 10.5 before 10.5.6 allows user-assisted remote attackers to execute arbitrary code via an executable file with the content type indicating no application association for the file, which does not trigger a "potentially unsafe" warning message.

UDF in Apple Mac OS X before 10.5.6 allows user-assisted attackers to cause a denial of service (system crash) via a malformed UDF volume in a crafted ISO file.

Podcast Producer in Apple Mac OS X 10.5 before 10.5.6 allows remote attackers to bypass authentication and gain administrative access via unspecified vectors.

natd in network_cmds in Apple Mac OS X before 10.5.6, when Internet Sharing is enabled, allows remote attackers to cause a denial of service (infinite loop) via a crafted TCP packet.

The strptime API in Libsystem in Apple Mac OS X before 10.5.6 allows context-dependent attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a crafted date string, related to improper memory allocation.

Integer overflow in the inet_net_pton API in Libsystem in Apple Mac OS X before 10.5.6 allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via unspecified vectors. NOTE: this may be related to the WLB-2008080064 advisory published by SecurityReason on 20080822; however, as of 20081216, there are insufficient details to be sure.