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Category:   OS (UNIX)  >   launchd Vendors:   Apple
Apple Mac OS X Format String Bug in launchd Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1016397
SecurityTracker URL:  http://securitytracker.com/id/1016397
CVE Reference:   CVE-2006-1471   (Links to External Site)
Date:  Jun 28 2006
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10.4 - 10.4.6
Description:   A vulnerability was reported in Apple Mac OS X in launchd. A local user can gain elevated privileges.

The 'launchd' application contains a format string flaw in the logging function. A local user can cause launchd to execute arbitrary code. The application is configured with set user id (setuid) privileges.

Systems prior to Mac OS X v10.4 are not affected.

Apple credits Kevin Finisterre of DigitalMunition with reporting this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued a fix (OS X 10.4.7), available from the Software Update pane in System Preferences, or Apple's Software Downloads web site at:

http://www.apple.com/support/downloads/

For Mac OS X v10.4.6 (PowerPC)
The download file is named: "MacOSXUpd10.4.7PPC.dmg"
Its SHA-1 digest is: 223d1fc9197a6a96c9d2f2a9110d37abc219c3a6

For Mac OS X v10.4 (PowerPC) through v10.4.6 (PowerPC)
The download file is named: "MacOSXUpdCombo10.4.7PPC.dmg"
Its SHA-1 digest is: c5c45dd81429520338caaef012b7da0e01a41f84

For Mac OS X v10.4.6 (Intel)
The download file is named: "MacOSXUpd10.4.7Intel.dmg"
Its SHA-1 digest is: 2a25ed61d586b71ba7282fb896b2c910785ff358

For Mac OS X v10.4.4 (Intel) or v10.4.5 (Intel)
The download file is named: "MacOSXUpdCombo10.4.7Intel.dmg"
Its SHA-1 digest is: 15b186d5f3a2314a060df3502eda190ad31a354d

For Mac OS X Server v10.4.6
The download file is named: "MacOSXServerUpdate10.4.7.dmg"
Its SHA-1 digest is: d83c3f6266f95f16e4b3abaebb6cdc89100dc41b

For Mac OS X Server v10.4 through v10.4.6
The download file is named: "MacOSXSrvrUpdCombo10.4.7.dmg"
Its SHA-1 digest is: 9ec47d4111072c3b908958a95459d0b18173e08c

Vendor URL:  docs.info.apple.com/article.html?artnum=61798 (Links to External Site)
Cause:   Boundary error

Message History:   None.


 Source Message Contents

Subject:  APPLE-SA-2006-06-27 Mac OS X v10.4.7

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2006-06-27 Mac OS X v10.4.7

Mac OS X v10.4.7 is now available and addresses the following
issues:

AFP
CVE-ID:  CVE-2006-1468
Available for:  Mac OS X v10.4 - v10.4.6, Mac OS X Server v10.4 -
v10.4.6
Impact:  File and folder names may be disclosed to unauthorized
users
Description:  An issue in AFP server allows search results to
include the names of files and folders for which the user
performing the search has no access. This could result in
information disclosure if the names themselves are sensitive
information. This update addresses the issue by ensuring that
search results only include items for which the user is
authorized. This issue does not affect systems prior to Mac OS X
v10.4.

ClamAV
CVE-ID:  CVE-2006-1989
Available for:  Mac OS X Server v10.4 - v10.4.6
Impact:  When virus scanning is configured to update
automatically, a malicious database mirror may cause arbitrary
code execution
Description:  An issue in ClamAV's automatic virus database
updating may result in a stack-based buffer overflow. A
malicious or spoofed ClamAV database mirror may be able to cause
arbitrary code execution with the privileges of ClamAV. The Mail
service, virus scanning, and automatic virus database updates
are off by default. This update addresses the issue by
incorporating ClamAV 0.88.2. This issue does not affect systems
prior to Mac OS X v10.4.

ImageIO
CVE-ID:  CVE-2006-1469
Available for:  Mac OS X v10.4 - v10.4.6, Mac OS X Server v10.4 -
v10.4.6
Impact:  Viewing a maliciously-crafted TIFF image may result in
an application crash or arbitrary code execution
Description:  By carefully crafting a corrupt TIFF image, an
attacker can trigger a stack-based buffer overflow which may
result in an application crash or arbitrary code execution. This
update addresses the issue by performing additional validation
of TIFF images. This issue does not affect systems prior to Mac
OS X v10.4.

launchd
CVE-ID:  CVE-2006-1471
Available for:  Mac OS X v10.4 - v10.4.6, Mac OS X Server v10.4 -
v10.4.6
Impact:  Local users may gain elevated privileges
Description:  A format string vulnerability in the setuid program
launchd may allow an authenticated local user to execute
arbitrary code with system privileges. The issue is present in
launchd's logging facility. This update addresses the issue by
performing additional validation when logging messages. This
issue does not affect systems prior to Mac OS X v10.4. Credit to
Kevin Finisterre of DigitalMunition for reporting this issue.

OpenLDAP
CVE-ID:  CVE-2006-1470
Available for:  Mac OS X v10.4 - v10.4.6, Mac OS X Server v10.4 -
v10.4.6
Impact:  Remote attackers may cause Open Directory server to
crash
Description:  By carefully crafting an invalid LDAP request, a
remote attacker may be able to trigger an assertion in the
OpenLDAP server, resulting in a denial-of-service. This update
addresses the issue by discarding the invalid request. This
issue does not affect systems prior to Mac OS X v10.4. Credit to
the Mu Security research team for reporting this issue.

Mac OS X v10.4.7 may be obtained from the Software Update pane in
System Preferences, or Apple's Software Downloads web site:
http://www.apple.com/support/downloads/

For Mac OS X v10.4.6 (PowerPC)
The download file is named:  "MacOSXUpd10.4.7PPC.dmg"
Its SHA-1 digest is:  223d1fc9197a6a96c9d2f2a9110d37abc219c3a6

For Mac OS X v10.4 (PowerPC) through v10.4.6 (PowerPC)
The download file is named:  "MacOSXUpdCombo10.4.7PPC.dmg"
Its SHA-1 digest is:  c5c45dd81429520338caaef012b7da0e01a41f84

For Mac OS X v10.4.6 (Intel)
The download file is named:  "MacOSXUpd10.4.7Intel.dmg"
Its SHA-1 digest is:  2a25ed61d586b71ba7282fb896b2c910785ff358

For Mac OS X v10.4.4 (Intel) or v10.4.5 (Intel)
The download file is named:  "MacOSXUpdCombo10.4.7Intel.dmg"
Its SHA-1 digest is:  15b186d5f3a2314a060df3502eda190ad31a354d

For Mac OS X Server v10.4.6
The download file is named:  "MacOSXServerUpdate10.4.7.dmg"
Its SHA-1 digest is:  d83c3f6266f95f16e4b3abaebb6cdc89100dc41b

For Mac OS X Server v10.4 through v10.4.6
The download file is named:  "MacOSXSrvrUpdCombo10.4.7.dmg"
Its SHA-1 digest is:  9ec47d4111072c3b908958a95459d0b18173e08c

Information will also be posted to the Apple Product Security
web site:
http://docs.info.apple.com/article.html?artnum=61798

This message is signed with Apple's Product Security PGP key,
and details are available at:
http://www.apple.com/support/security/pgp/

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