Making Friday a somewhat official update-o-rama, Apple released Security Update 2009-001, its first collection of security fixes for the new year.
The 43.4 megabyte download contains the following fixes and features:
Impact: A user with the ability to connect to AFP Server may be a 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.
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.
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.
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 web site 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.
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.
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.
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/.
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.
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 is triggered. This update addresses the issue by properly handling the number of RSS subscriptions. This issue does not affect systems prior to Mac OS X v10.5.
Impact: Passwords supplied to dscl are exposed to other local users
Description: The dscl command-line tool required that passwords be 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.
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 web site at http://fetchmail.berlios.de/
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 accessible only 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.
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 which 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.
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.
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.
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.
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.
Impact: Sending Remote Apple events may lead to the disclosure of sensitive information
Description: An uninitialized 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 initialization. Credit: Apple.
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 exits 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.
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. esp 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.
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.
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.
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.
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 web site at http://www.SquirrelMail.org/
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
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.
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.
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 accessible only by the user.
Security Update 2009-001 requires Mac OS X 10.5 or later to install and run.
If you’ve tried the update and noticed any changes, please let us know in the comments or forums.
Making Friday a somewhat official update-o-rama, Apple released Security Update 2009-001, its first collection of security fixes for the new year.
The 43.4 megabyte download contains the following fixes and features:
Impact: A user with the ability to connect to AFP Server may be a 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.
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.
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.
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 web site 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.
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.
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.
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/.
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.
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 is triggered. This update addresses the issue by properly handling the number of RSS subscriptions. This issue does not affect systems prior to Mac OS X v10.5.
Impact: Passwords supplied to dscl are exposed to other local users
Description: The dscl command-line tool required that passwords be 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.
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 web site at http://fetchmail.berlios.de/
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 accessible only 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.
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 which 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.
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.
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.
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.
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.
Impact: Sending Remote Apple events may lead to the disclosure of sensitive information
Description: An uninitialized 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 initialization. Credit: Apple.
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 exits 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.
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. esp 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.
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.
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.
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.
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 web site at http://www.SquirrelMail.org/
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
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.
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.
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 accessible only by the user.
Security Update 2009-001 requires Mac OS X 10.5 or later to install and run.
If you’ve tried the update and noticed any changes, please let us know in the comments or forums.