About the security content of Security Update 2009-001

This document describes Security Update 2009-001, which can be downloaded and installed via Software Update preferences, or from Apple Downloads.

For the protection of our customers, Apple does not disclose, discuss or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To find out more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see "How to use the Apple Product Security PGP Key."

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To find out more about other Security Updates, see "Apple Security Updates".

Security Update 2009-001

• AFP Server

  CVE-ID: CVE-2009-0142

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: A user with the ability to connect to AFP Server may be able to trigger a denial of service

  Description: A race condition in AFP Server may lead to an infinite loop. Enumerating files on an AFP server may lead to a denial of service. This update addresses the issue through improved file enumeration logic. This issue only affects systems running Mac OS X v10.5.6.

• Apple Pixlet Video

  CVE-ID: CVE-2009-0009

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Opening a maliciously crafted movie file may lead to an unexpected application termination or arbitrary code execution

  Description: A memory corruption issue exist in the handling of movie files using the Pixlet codec. Opening a maliciously crafted movie file may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved bounds checking. Credit: Apple.

• CarbonCore

  CVE-ID: CVE-2009-0020

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Opening a file with a maliciously crafted resource fork may lead to an unexpected application termination or arbitrary code execution

  Description: A memory corruption issue exists in Resource Manager’s handling of resource forks. Opening a file with a maliciously crafted resource fork may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved validation of resource forks. Credit: Apple.

• CFNetwork

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Restores proper operation of cookies with null expiration times

  Description: This update addresses a non-security regression introduced in Mac OS X 10.5.6. Cookies may not be properly set if a website attempts to set a session cookie by supplying a null value in the “expires” field, rather than omitting the field. This update addresses the issue by ignoring the “expires” field if it has a null value.

• CFNetwork

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Restores proper operation of session cookies across applications

  Description: This update addresses a non-security regression introduced in Mac OS X 10.5.6. CFNetwork may not save cookies to disk if multiple open applications attempt to set session cookies. This update addresses the issue by ensuring that each application stores its session cookies separately.

• Certificate Assistant

  CVE-ID: CVE-2009-0011

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: A local user may manipulate files with the privileges of another user running Certificate Assistant

  Description: An insecure file operation exists in Certificate Assistant’s handling of temporary files. This could allow a local user to overwrite files with the privileges of another user who is running Certificate Assistant. This update addresses the issue through improved handling of temporary files. This issue does not affect systems prior to Mac OS X v10.5. Credit: Apple.

• ClamAV

  CVE-ID: CVE-2008-5050, CVE-2008-5314

  Available for: Mac OS X Server v10.4.11, Mac OS X Server v10.5.6

  Impact: Multiple vulnerabilities in ClamAV 0.94

  Description: Multiple vulnerabilities exist in ClamAV 0.94, the most serious of which may lead to arbitrary code execution. This update addresses the issues by updating ClamAV to version 0.94.2. ClamAV is distributed only with Mac OS X Server systems. Further information is available via the ClamAV website at http://www.clamav.net/

• CoreText

  CVE-ID: CVE-2009-0012

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Viewing maliciously crafted Unicode content may lead to an unexpected application termination or arbitrary code execution

  Description: A heap buffer overflow may occur when processing Unicode strings in CoreText. Using CoreText to handle maliciously crafted Unicode strings, such as when viewing a maliciously crafted web page, may result in 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 v10.5. Credit to Rosyna of Unsanity for reporting this issue.

• CUPS

  CVE-ID: CVE-2008-5183

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Visiting a maliciously crafted website may lead to an unexpected application termination

  Description: Exceeding the maximum number of RSS subscriptions results in a null pointer dereference in the CUPS web interface. This may lead to an unexpected application termination when visiting a maliciously crafted website. In order to trigger this issue, valid user credentials must either be known by the attacker or cached in the user’s web browser. CUPS will be automatically restarted after this issue has been triggered. This update addresses the issue by correctly handling the number of RSS subscriptions. This issue does not affect systems prior to Mac OS X v10.5.

• DS Tools

  CVE-ID: CVE-2009-0013

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Passwords supplied to dscl are exposed to other local users

  Description: The dscl command-line tool required that passwords are passed to it in its arguments, potentially exposing the passwords to other local users. Passwords exposed include those for users and administrators. This update makes the password parameter optional, and dscl will prompt for the password if needed. Credit: Apple.

• fetchmail

  CVE-ID: CVE-2007-4565, CVE-2008-2711

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Multiple vulnerabilities in fetchmail 6.3.8

  Description: Multiple vulnerabilities exist in fetchmail 6.3.8, the most serious of which may lead to a denial of service. This update addresses the issues by updating to version 6.3.9. Further information is available via the fetchmail website at http://fetchmail.berlios.de/

• Folder Manager

  CVE-ID: CVE-2009-0014

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Other local users may access the Downloads folder

  Description: A default permissions issue exists in Folder Manager. When a user deletes their Downloads folder and Folder Manager recreates it, the folder is created with read permissions for everyone. This update addresses the issue by having Folder Manager limit permissions so that the folder is only accessible to the user. This issue only affects applications using Folder Manager. This issue does not affect systems prior to Mac OS X v10.5. Credit to Graham Perrin of CENTRIM, University of Brighton for reporting this issue.

• FSEvents

  CVE-ID: CVE-2009-0015

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Using the FSEvents framework, a local user may be able to see filesystem activity that would otherwise not be available

  Description: A credential management issue exists in fseventsd. By using the FSEvents framework, a local user may be able to see filesystem activity that would otherwise not be available. This includes the name of a directory that the user would not otherwise be able to see, and the detection of activity in the directory at a given time. This update addresses the issue through improved credential validation in fseventsd. This issue does not affect systems prior to Mac OS X v10.5. Credit to Mark Dalrymple for reporting this issue.

• Network Time

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: The Network Time service configuration has been updated

  Description: As a proactive security measure, this update changes the default configuration for the Network Time service. System time and version information will no longer be available in the default ntpd configuration. On Mac OS X v10.4.11 systems, the new configuration takes effect after a system restart when Network Time service is enabled.

• perl

  CVE-ID: CVE-2008-1927

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Using regular expressions containing UTF-8 characters may lead to an unexpected application termination or arbitrary code execution

  Description: A memory corruption issue exists in the handling of certain UTF-8 characters in regular expressions. Parsing maliciously crafted regular expressions may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue by performing additional validation of regular expressions.

• Printing

  CVE-ID: CVE-2009-0017

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: A local user may obtain system privileges

  Description: An error handling issue exists in csregprinter, which may result in a heap buffer overflow. This may allow a local user to obtain system privileges. This update addresses the issue through improved error handling. Credit to Lars Haulin for reporting this issue.

• python

  CVE-ID: CVE-2008-1679, CVE-2008-1721, CVE-2008-1887, CVE-2008-2315, CVE-2008-2316, CVE-2008-3142, CVE-2008-3144, CVE-2008-4864, CVE-2007-4965, CVE-2008-5031

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Multiple vulnerabilities in python

  Description: Multiple vulnerabilities exist in python, the most serious of which may lead to arbitrary code execution. This update addresses the issues by applying patches from the python project.

• Remote Apple Events

  CVE-ID: CVE-2009-0018

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Sending Remote Apple events may lead to the disclosure of sensitive information

  Description: An uninitialised buffer issue exists in the Remote Apple Events server, which may lead to disclosure of memory contents to network clients. This update addresses the issue through proper memory initialisation. Credit: Apple.

• Remote Apple Events

  CVE-ID: CVE-2009-0019

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Enabling Remote Apple Events may lead to an unexpected application termination or the disclosure of sensitive information

  Description: An out-of-bounds memory access exists in Remote Apple Events. Enabling Remote Apple Events may lead to an unexpected application termination or the disclosure of sensitive information to network clients. This update addresses the issue through improved bounds checking. Credit: Apple.

• Safari RSS

  CVE-ID: CVE-2009-0137

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Accessing a maliciously crafted feed: URL may lead to arbitrary code execution

  Description: Multiple input validation issues exist in Safari’s handling of feed: URLs. The issues allow execution of arbitrary JavaScript in the local security zone. This update addresses the issues through improved handling of embedded JavaScript within feed: URLs. Credit to Clint Ruoho of Laconic Security, Billy Rios of Microsoft and Brian Mastenbrook for reporting these issues.

• servermgrd

  CVE-ID: CVE-2009-0138

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Remote attackers may be able to access Server Manager without valid credentials

  Description: An issue in Server Manager’s validation of authentication credentials could allow a remote attacker to alter the system configuration. This update addresses the issue through additional validation of authentication credentials. This issue does not affect systems prior to Mac OS X v10.5. Credit: Apple.

• SMB

  CVE-ID: CVE-2009-0139

  Available for: Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Connecting to a maliciously crafted SMB file system may lead to an unexpected system shutdown or arbitrary code execution with system privileges

  Description: An integer overflow in SMB File System may result in a heap buffer overflow. Connecting to a maliciously crafted SMB file system may lead to an unexpected system shutdown or arbitrary code execution with system privileges. This update addresses the issue through improved bounds checking. This issue does not affect systems prior to Mac OS X v10.5. Credit: Apple.

• SMB

  CVE-ID: CVE-2009-0140

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Connecting to a maliciously crafted SMB file server may lead to an unexpected system shutdown

  Description: A memory exhaustion issue exists in the SMB File System’s handling of file system names. Connecting to a maliciously crafted SMB file server may lead to an unexpected system shutdown. This update addresses the issue by limiting the amount of memory allocated by the client for file system names. Credit: Apple.

• SquirrelMail

  CVE-ID: CVE-2008-2379, CVE-2008-3663

  Available for: Mac OS X Server v10.4.11, Mac OS X Server v10.5.6

  Impact: Multiple vulnerabilities in SquirrelMail

  Description: SquirrelMail is updated to version 1.4.17 to address several vulnerabilities, the most serious of which is a cross-site scripting issue. Further information is available via the SquirrelMail website at http://www.SquirrelMail.org/

• X11

  CVE-ID: CVE-2008-1377, CVE-2008-1379, CVE-2008-2360, CVE-2008-2361, CVE-2008-2362

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: Multiple vulnerabilities in X11 server

  Description: Multiple vulnerabilities exist in X11 server. The most serious of these may lead to arbitrary code execution with the privileges of the user running the X11 server, if the attacker can authenticate to the X11 server. This update addresses the issues by applying the updated X.Org patches. Further information is available via the X.Org website at http://www.x.org/wiki/Development/Security

• X11

  CVE-ID: CVE-2006-1861, CVE-2006-3467, CVE-2007-1351, CVE-2008-1806, CVE-2008-1807, CVE-2008-1808

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11

  Impact: Multiple vulnerabilities in FreeType v2.1.4

  Description: Multiple vulnerabilities exist in FreeType v2.1.4, the most serious of which may lead to arbitrary code execution when processing a maliciously crafted font. This update addresses the issues by incorporating the security fixes from version 2.3.6 of FreeType. Further information is available via the FreeType site at http://www.freetype.org/ The issues are already addressed in systems running Mac OS X v10.5.6.

• X11

  CVE-ID: CVE-2007-1351, CVE-2007-1352, CVE-2007-1667

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11

  Impact: Multiple vulnerabilities in LibX11

  Description: Multiple vulnerabilities exist in LibX11, the most serious of which may lead to arbitrary code execution when processing a maliciously crafted font. This update addresses the issues by applying the updated X.Org patches. Further information is available via the X.Org website at http://www.x.org/wiki/Development/Security These issues do not affect systems running Mac OS X v10.5 or later.

• XTerm

  CVE-ID: CVE-2009-0141

  Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.6, Mac OS X Server v10.5.6

  Impact: A local user may send information directly to another user’s Xterm

  Description: A permissions issue exists in Xterm. When used with luit, Xterm creates tty devices accessible by everyone. This update addresses the issue by having Xterm limit the permissions so tty devices are only accessible by the user.