About the security content of Security Update 2010-004 / Mac OS X v10.6.4

This document describes the security content of Security Update 2010-004 / Mac OS X v10.6.4.

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 learn 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 learn about other Security Updates, see "Apple Security Updates."

Security Update 2010-004 / Mac OS X v10.6.4

• CUPS

  CVE-ID: CVE-2010-0540

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Visiting a maliciously crafted website while logged into the CUPS web interface as an administrator may allow CUPS settings to be changed

  Description: A cross-site request forgery issue exists in the CUPS web interface. Visiting a maliciously crafted website while logged into the CUPS web interface as an administrator may allow CUPS settings to be changed. This issue is addressed by requiring web form submissions to include a randomized session token. Credit to Adrian 'pagvac' Pastor of GNUCITIZEN, and Tim Starling for reporting this issue.

• CUPS

  CVE-ID: CVE-2010-0302

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A remote attacker may cause an unexpected application termination of cupsd

  Description: A use after free issue exists in cupsd. By issuing a maliciously crafted get-printer-jobs request, an attacker may cause a remote denial of service. This is mitigated through the automatic restart of cupsd after its termination. This issue is addressed through improved connection use tracking. Credit to Tim Waugh for reporting this issue.

• CUPS

  CVE-ID: CVE-2010-1748

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: An attacker with access to the CUPS web interface may be able to read a limited amount of memory from the cupsd process

  Description: An uninitialized memory read issue exists in the CUPS web interface's handling of form variables. An attacker with access to the CUPS web interface may be able to read a limited amount of memory from the cupsd process. By default, only local users may access the web interface. Remote users may access it as well when Printer Sharing is enabled. This issue is addressed through improved handling of form variables. Credit to Luca Carettoni for reporting this issue.

• DesktopServices

  CVE-ID: CVE-2010-0545

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A Finder operation may result in files or folders with unexpected permissions

  Description: When "Apply to enclosed items..." is selected in the "Get Info" window in the Finder, the ownership of the enclosed items is not changed. This may cause the enclosed files and folders to have unexpected permissions. This issue is addressed by applying the correct ownership. Credit to Michi Ruepp of pianobakery.com for reporting this issue.

• Flash Player plug-in

  CVE-ID: CVE-2010-0186, CVE-2010-0187

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Multiple vulnerabilities in Adobe Flash Player plug-in

  Description: Multiple issues exist in the Adobe Flash Player plug-in, the most serious of which may lead to unauthorized cross-domain requests. The issues are addressed by updating the Flash Player plug-in to version 10.0.45.2 Further information is available via the Adobe web site at http://www.adobe.com/support/security/

• Folder Manager

  CVE-ID: CVE-2010-0546

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Unmounting a maliciously crafted disk image or remote share may lead to data loss

  Description: A symlink following issue exists in Folder Manager. A folder named "Cleanup At Startup" is removed upon unmount. A maliciously crafted volume may use a symlink to cause the deletion of an arbitrary folder with the permissions of the current user. This issue is addressed through improved handling of symlinks. Credit: Apple.

• Help Viewer

  CVE-ID: CVE-2010-1373

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Visiting a maliciously crafted website may lead to the execution of JavaScript in the local domain

  Description: A cross-site scripting issue exists in Help Viewer's handling of help: URLs. Visiting a maliciously crafted website may lead to the execution of JavaScript in the local domain. This may lead to information disclosure or arbitrary code execution. This issue is addressed through improved escaping of URL parameters in HTML content. This issue does not affect systems prior to Mac OS X v10.6. Credit to Clint Ruoho of Laconic Security for reporting this issue.

• iChat

  CVE-ID: CVE-2010-1374

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A remote user may upload files to arbitrary locations on the filesystem of a user currently using AIM in iChat

  Description: A directory traversal issue exists in iChat's handling of inline image transfers. A remote user may upload files to arbitrary locations on the filesystem of a user currently using AIM in iChat. This issue is addressed through improved handling of file paths. Credit: Apple.

• ImageIO

  CVE-ID: CVE-2010-1411

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

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

  Description: Multiple integer overflows in the handling of TIFF files may result in a heap buffer overflow. Opening a maliciously crafted TIFF file may lead to an unexpected application termination or arbitrary code execution. The issues are addressed through improved bounds checking. Credit to Kevin Finisterre of digitalmunition.com for reporting these issues.

• ImageIO

  CVE-ID: CVE-2010-0543

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8

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

  Description: A memory corruption exists in the handling of MPEG2 encoded movie files. Viewing a maliciously crafted movie file may lead to an unexpected application termination or arbitrary code execution. This issue is addressed by performing additional validation of MPEG2 encoded movie files. For Mac OS X v10.6 systems this issue is addressed in Mac OS X v10.6.2. Credit: Apple.

• ImageIO

  CVE-ID: CVE-2010-1816

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Processing a maliciously crafted image may lead to an unexpected application termination or arbitrary code execution

  Description: A buffer overflow exists in the handling of images. Processing a maliciously crafted image may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking. This issue does not affect systems prior to Mac OS X v10.6. Credit to Joseph Spiros of iThink Software for reporting this issue.

• Kerberos

  CVE-ID: CVE-2009-4212

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: An unauthenticated remote user may cause an unexpected termination of the KDC process, or arbitrary code execution

  Description: An integer overflow exists in AES and RC4 decryption operations of the crypto library in the KDC server. Sending a maliciously crafted encrypted message to the KDC server may lead to an unexpected termination of the KDC process, or arbitrary code execution. This issue is addressed through improved bounds checking. Credit to the MIT Kerberos Team for reporting this issue.

• Kerberos

  CVE-ID: CVE-2010-1320

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A remote user may cause an unexpected termination of the KDC process, or arbitrary code execution

  Description: A double free issue exists in the renewal or validation of existing tickets in the KDC process. A remote user may cause an unexpected termination of the KDC process, or arbitrary code execution. This issue is addressed through improved ticket handling. This issue does not affect systems prior to Mac OS X v10.6. Credit to Joel Johnson for reporting this issue to Debian, and Brian Almeida working with the MIT Kerberos Security Team.

• Kerberos

  CVE-ID: CVE-2010-0283

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: An unauthenticated remote user may cause an unexpected termination of the KDC process

  Description: A logic issue in the handling of KDC requests may cause an assertion to be triggered. Sending a maliciously crafted message to the KDC server, a remote attacker may be able to interrupt the Kerberos service by triggering an assertion. This issue is addressed through improved validation of KDC requests. This issue does not affect systems prior to Mac OS X v10.6. Credit to Emmanuel Bouillon of NATO C3 Agency working the MIT Kerberos Security Team for reporting this issue.

• Kernel

  CVE-ID: CVE-2010-1821

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A local user may obtain system privileges

  Description: A logic issue exists in the handling of vfork where the Mach exception handler is not reset in a certain case. This may allow a local user to obtain system privileges. This issue is addressed through improved handling of vfork. Credit to Richard van Eeden of IOActive for reporting this issue.

• libcurl

  CVE-ID: CVE-2010-0734

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Using libcurl to download files from a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

  Description: A buffer overflow exists in libcurl's handling of gzip-compressed web content. When processing compressed content, libcurl may return an unexpectedly large amount of data to the calling application. This may lead to an unexpected application termination or arbitrary code execution. The issue is addressed by ensuring that the size of data blocks returned to the calling application by libcurl adheres to documented limits.

• Network Authorization

  CVE-ID: CVE-2010-1375

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8

  Impact: A local user may obtain system privileges

  Description: NetAuthSysAgent does not require authorization for certain operations. This may allow a local user to obtain system privileges. This issue is addressed by requiring authorization for additional operations. This issue does not affect Mac OS X v10.6 systems. Credit: Apple.

• Network Authorization

  CVE-ID: CVE-2010-1376

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

  Description: A format string issue exists in the handling of afp:, cifs:, and smb: URLs. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved validation of afp:, cifs:, and smb: URLs. This issue does not affect systems prior to Mac OS X v10.6. Credit to Ilja van Sprundel of IOActive, and Chris Ries of Carnegie Mellon University Computing Services for reporting this issue.

• Open Directory

  CVE-ID: CVE-2010-1377

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A man-in-the-middle attacker may be able to impersonate a network account server

  Description: When binding to a network account server via System Preferences, Open Directory will automatically negotiate an unprotected connection to the server if it is not possible to connect to the server with Secure Sockets Layer (SSL). A man-in-the-middle attacker may be able to impersonate the network account server, which may lead to arbitrary code execution with system privileges. This issue is addressed by providing an option to require a secure connection. This issue does not affect systems prior to Mac OS X v10.6.

• Printer Setup

  CVE-ID: CVE-2010-1379

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Network devices may disable printing in certain applications

  Description: A character encoding issue exists in Printer Setup's handling of nearby printers. If a device on the local network advertises a printing service with a Unicode character in its service name, printing may fail in certain applications. The issue is addressed through improved handling of shared printers. This issue does not affect systems prior to Mac OS X v10.6. Credit to Filipp Lepalaan of mcare Oy for reporting this issue.

• Printing

  CVE-ID: CVE-2010-1380

  Available for: Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A user with access to the printer may cause an unexpected application termination or arbitrary code execution

  Description: An integer overflow issue exists in the calculation of page sizes in the cgtexttops CUPS filter. A local or remote user with access to the printer may cause an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking. This issue does not affect systems prior to Mac OS X v10.6. Credit to regenrecht working with iDefense for reporting this issue.

• Ruby

  CVE-ID: CVE-2010-0541

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A remote attacker may gain access to accounts served by Ruby WEBrick

  Description: A cross-site scripting issue exists in the Ruby WEBrick HTTP server's handling of error pages. Accessing a maliciously crafted URL in certain web browsers may cause the error page to be treated as UTF-7, allowing JavaScript injection. The issue is addressed by setting UTF-8 as the default character set in HTTP error responses. Credit: Apple.

• SMB File Server

  CVE-ID: CVE-2010-1381

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: A remote user may obtain unauthorized access to arbitrary files

  Description: A configuration issue exists in Apple's distribution of Samba, the server used for SMB file sharing. Using symbolic links, a remote user with access to an SMB share may obtain unauthorized access to arbitrary files. This issue is addressed by disabling support for wide links in the Samba configuration file.

• SquirrelMail

  CVE-ID: CVE-2009-1578, CVE-2009-1579, CVE-2009-1580, CVE-2009-1581, CVE-2009-2964

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Multiple vulnerabilities in SquirrelMail

  Description: SquirrelMail is updated to version 1.4.20 to address several vulnerabilities, the most serious of which is a cross-site scripting issue. Further information is available via the SquirrelMail web site at http://www.SquirrelMail.org/

• Wiki Server

  CVE-ID: CVE-2010-1382

  Available for: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6 through v10.6.3, Mac OS X Server v10.6 through v10.6.3

  Impact: Viewing maliciously crafted Wiki content may result in a cross-site scripting attack

  Description: The Wiki Server does not specify an explicit character set when serving HTML documents in response to user requests. An attacker with the ability to post or comment on Wiki Server hosted content may include scripts encoded in an alternate character set. This may lead to a cross-site scripting attack against users of the Wiki Server. The issue is addressed by specifying a character set for the document in HTTP responses.