Snow Leopard 10.6.2 updates security

The 10.6.2 update is recommended for Mac OS X 10.6 Snow Leopard users and includes general operating system fixes that enhance the stability, compatibility, and security of your Mac.

AFP Client
Multiple memory corruption issues exist in AFP Client. Connecting to a malicious AFP Server may cause an unexpected system termination or arbitrary code execution with system privileges. This update addresses the issues through improved bounds checking. These issues do not affect Mac OS X v10.6 systems.

Adaptive Firewall
Adaptive Firewall responds to suspicious activity, such as an unusual volume of access attempts, by creating a temporary rule to restrict access. In certain circumstances, Adaptive Firewall may not detect SSH login attempts using invalid user names. This update addresses the issue through improved detection of invalid SSH login attempts. This issue only affects Mac OS X Server systems.

Apache
Apache is updated to version 2.2.13 to address several vulnerabilities, the most serious of which may lead to privilege escalation.

Apache
The Apache web server allows the TRACE HTTP method. A remote attacker may use this facility to conduct cross-site scripting attacks through certain web client software. This issue is addressed by updating the configuration to disable support for the TRACE method.

Apache Portable Runtime
Multiple integer overflows in Apache Portable Runtime (apr) may lead to an unexpected application termination or arbitrary code execution. These issues are addressed by updating Apache Portable Runtime to version 1.3.8 on Mac OS X v10.6 systems, and by applying the Apache Portable Runtime patches on Mac OS X v10.5.8 systems. Systems running Mac OS X v10.6 are affected only by CVE-2009-2412.

ATS
Multiple buffer overflows exist in Apple Type Services’ handling of embedded fonts. Viewing or downloading a document containing a maliciously crafted embedded font may lead to arbitrary code execution. This update addresses the issues through improved bounds checking. These issues do not affect Mac OS X v10.6 systems.

Certificate Assistant
An implementation issue exists in the handling of SSL certificates which have NUL characters in the Common Name field. A user could be misled into accepting an attacker-crafted certificate that visually appears to match the domain visited by the user. This issue is mitigated as Mac OS X does not consider such a certificate to be valid for any domain. This update addresses the issue through improved handling of SSL certificates.

CoreGraphics
Multiple integer overflows in CoreGraphics’ handling of PDF files may result in a heap buffer overflow. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issues through improved bounds checking. These issues do not affect Mac OS X v10.6 systems.

CoreMedia
A memory corruption issue exists in the handling of H.264 movie files. Viewing a maliciously crafted H.264 movie file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue does not affect systems prior to Mac OS X v10.6.

CoreMedia
A heap buffer overflow exists in the handling of H.264 movie files. Viewing a maliciously crafted H.264 movie file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue does not affect systems prior to Mac OS X v10.6.

CUPS
An issue in CUPS may lead to cross-site scripting and HTTP response splitting. Accessing a maliciously crafted web page or URL may allow an attacker to access content available to the current local user via the CUPS web interface. This could include print system configuration and the titles of jobs that have been printed. This issue is addressed through improved handling of HTTP headers and HTML templates.

Dictionary
A design issue in Dictionary allows maliciously crafted Javascript to write arbitrary data to arbitary locations on the user’s filesystem. This may allow another user on the local network to execute arbitrary code on the user’s system. This update addresses the issue by removing the vulnerable code. This issue does not affect Mac OS X v10.6 systems.

DirectoryService
A memory corruption issue exists in DirectoryService. This may allow a remote attacker to cause an unexpected application termination or arbitrary code execution. This update only affects systems configured as DirectoryService servers. This update addresses the issue through improved memory handling. This issue does not affect Mac OS X v10.6 systems.

Disk Images
A heap buffer overflow exists in the handling of disk images containing FAT filesystems. Downloading a maliciously crafted disk image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue does not affect Mac OS X v10.6 systems.

Dovecot
Multiple buffer overflows exist in dovecot-sieve. By implementing a maliciously crafted dovecot-sieve script, a local user may cause an unexpected application termination or arbitrary code execution with system privileges. This update addresses the issue by performing additional validation of dovecot-sieve scripts. This issue affects Mac OS X Server systems only. This issue does not affect systems prior to Mac OS X v10.6.

Event Monitor
A log injection issue exists in Event Monitor. By connecting to the SSH server with maliciously crafted authentication information, a remote attacker may cause log injection. This may lead to a denial of service as log data is processed by other services. This update addresses the issue through improved escaping of XML output. This issue affects Mac OS X Server systems only. This issue does not affect Mac OS X v10.6 systems.

fetchmail
fetchmail has been updated to 6.3.11 to address a man-in-the-middle issue.

file
Multiple buffer overflows vulnerabilities exist in the file command line tool. Running the file command on a maliciously crafted Common Document Format (CDF) file may lead to an unexpected application termination or arbitrary code execution. These issues are addressed by updating file to version 5.03. These issues do not affect systems prior to Mac OS X v10.6.

FTP Server
A buffer overflow exists in FTP Server’s CWD command line tool. Issuing the CWD command on a deeply nested directory hierarchy may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue affects Mac OS X Server systems only.

Help Viewer
Help Viewer does not use HTTPS for viewing remote Apple Help content. A user on the local network may send spoofed HTTP responses containing malicious help:runscript links. This update addresses the issue by using HTTPS when requesting remote Apple Help content.

ImageIO
A buffer underflow exists in ImageIO’s handling of TIFF images. Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking.

International Components for Unicode
A buffer overflow exists in the UCCompareTextDefault API, which may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved memory management.

IOKit
A non-privileged user may alter the firmware in an attached USB or Bluetooth Apple keyboard. This update addresses the issue by requiring system privileges to send firmware to USB or Bluetooth Apple keyboards.

IPSec
Multiple vulnerabilities in the racoon daemon’s ipsec-tools before 0.7.2 may lead to a denial of service. This update addresses the issues by applying patches from the IPsec-Tools project.

Kernel
Multiple input validation issues exist in Kernel’s handling of task state segments. These may allow a local user to cause information disclosure, an unexpected system shutdown, or arbitrary code execution. This update addresses the issues through improved input validation.

Launch Services
When Launch Services is called to open a quarantined folder, it will recursively clear quarantine information from all files contained within the folder. The quarantine information that is cleared is used trigger a user warning prior to opening the item. This would allow the user to launch a potentially unsafe item, such as an application, without being presented with the appropriate warning dialog. This update addresses the issue by not clearing this quarantine information from the folder’s content. This issue does not affect systems prior to Mac OS X v10.6.

libsecurity
There are known cryptographic weaknesses in the MD2 hash algorithm. Further research could allow the creation of X.509 certificates with attacker controlled values that are trusted by the system. This could expose X.509 based protocols to spoofing, man in the middle attacks, and information disclosure. While it is not yet considered computationally feasible to mount an attack using these weaknesses, this update disables support for an X.509 certificate with an MD2 hash for any use other than as trusted root certificate. This is a proactive change to protect users in advance of improved attacks against the MD2 hash algorithm.

libxml
Multiple use-after-free issues exist in libxml2, the most serious may lead to an unxexpected application termination. This update addresses the issues through improved memory handling.

Login Window
A race condition exists in Login Window. If an account on the system has no password, such as the Guest account, a user may log in to any account without supplying a password. This update addresses the issue through improved access checks. This issue does not affect systems prior to Mac OS X v.10.6.

OpenLDAP
An implementation issue exists in OpenLDAP’s handling of SSL certificates which have NUL characters in the Common Name field. Using a maliciously crafted SSL certificate, an attacker may be able to perform a man-in-the-middle attack on OpenLDAP transactions which use SSL. This update addresses the issue through improved handling of SSL certificates.

OpenLDAP
Multiple vulnerabilities exist in OpenLDAP, the most serious of which may lead a denial of service or arbitrary code execution. This update addresses the issues by applying the OpenLDAP patches for the referenced CVE IDs. These issues do not affect Mac OS X v10.6 systems.

OpenSSH
An error handling issue exists in OpenSSH, which may lead to the disclosure of certain data in an SSH session. This update addresses the issue by updating OpenSSH to version 5.2p1. This issue does not affect Mac OS X v10.6 systems.

PHP
PHP is updated to version 5.2.11 to address multiple vulnerabilities, the most serious of which may lead to arbitrary code execution. These issues do not affect Mac OS X v10.6 systems.

QuickDraw Manager
A heap buffer overflow exists in QuickDraw’s handling of PICT images. Opening a maliciously crafted PICT image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue by performing additional validation of PICT images.

QuickLook
An integer overflow in QuickLook’s handling of Microsoft Office files may lead to a buffer overflow. Downloading a maliciously crafted Microsoft Office file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue does not affect Mac OS X v10.6 systems.

QuickTime
A memory corruption issue exists in the handling of H.264 movie files. Viewing a maliciously crafted H.264 movie file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue is already addressed in QuickTime 7.6.4 for both Mac OS X v10.5.8 and Windows.

QuickTime
A heap buffer overflow exists in the handling of H.264 movie files. Viewing a maliciously crafted H.264 movie file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue is already addressed in QuickTime 7.6.4 for both Mac OS X v10.5.8 and Windows.

QuickTime
A buffer overflow exists in QuickTime’s handling of MPEG-4 video files. Opening a maliciously crafted MPEG-4 video file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue is already addressed in QuickTime 7.6.4 for both Mac OS X v10.5.8 and Windows.

QuickTime
A heap buffer overflow exists in QuickTime’s handling of FlashPix files. Viewing a maliciously crafted FlashPix file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. This issue is already addressed in QuickTime 7.6.4 for both Mac OS X v10.5.8 and Windows.

FreeRADIUS
An issue exists in FreeRADIUS in the handling of Access-Request messages. A remote attacker may cause the RADIUS service to terminate by sending an Access-Request message containing a Tunnel-Password attribute with a zero-length attribute value. After any unexpected termination, the RADIUS service will be automatically restarted. This update addresses the issue through improved validation of zero-length attributes. This issue does not affect Mac OS X v10.6 systems.

Screen Sharing
Multiple memory corruption issues exist in the Screen Sharing client. Accessing a malicious VNC server, such as by opening a vnc:// URL, may cause an unexpected application termination or arbitrary code execution. This update addresses the issues through improved memory handling. This issue does not affect Mac OS X v10.6 systems.

Spotlight
An insecure file operation exists in Spotlight’s handling of temporary files. This could allow a local user to overwrite files with the privileges of another user. This update addresses the issue through improved handling of temporary files. This issue does not affect Mac OS X v10.6 systems.

Subversion
Multiple heap buffer overflows in Subversion may lead to an unexpected application termination or arbitrary code execution. This update addresses the issues by updating Subversion to version 1.6.5 for Mac OS X v10.6 systems, and by applying the Subversion patches for Mac OS X v10.5.8 systems.




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