The File Systems component in Apple Mac OS X before 10.7.2 does not properly track the specific X.509 certificate that a user manually accepted for an initial https WebDAV connection, which allows man-in-the-middle attackers to hijack WebDAV communication by presenting an arbitrary certificate for a subsequent connection.

Buffer overflow in QuickTime in Apple Mac OS X before 10.7.2 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted FlashPix file.

libxml2 before 2.7.8, as used in Google Chrome before 7.0.517.44, Apple Safari 5.0.2 and earlier, and other products, reads from invalid memory locations during processing of malformed XPath expressions, which allows context-dependent attackers to cause a denial of service (application crash) via a crafted XML document.

ipp.c in cupsd in CUPS 1.4.4 and earlier does not properly allocate memory for attribute values with invalid string data types, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly execute arbitrary code via a crafted IPP request.

Adaptive Firewall in Apple Mac OS X before 10.6.2 does not properly handle invalid usernames in SSH login attempts, which makes it easier for remote attackers to obtain login access via a brute-force attack (aka dictionary attack).

IOKit in Apple Mac OS X before 10.6.2 allows local users to modify the firmware of a (1) USB or (2) Bluetooth keyboard via unspecified vectors.

Buffer overflow in FTP Server in Apple Mac OS X before 10.6.2 allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a CWD command specifying a pathname in a deeply nested hierarchy of directories, related to a "CWD command line tool."

Certificate Assistant in Apple Mac OS X before 10.6.2 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which might allow man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Help Viewer in Apple Mac OS X before 10.6.2 does not use an HTTPS connection to retrieve Apple Help content from a web site, which allows man-in-the-middle attackers to send a crafted help:runscript link, and thereby execute arbitrary code, via a spoofed response.

The kernel in Apple Mac OS X before 10.6.2 does not properly handle task state segments, which allows local users to gain privileges, cause a denial of service (system crash), or obtain sensitive information via unspecified vectors.