TITLE:
Mac OS X Security Update Fixes Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA19064

VERIFY ADVISORY:
http://secunia.com/advisories/19064/

CRITICAL:
Extremely critical

IMPACT:
Security Bypass, Cross Site Scripting, Privilege escalation, DoS,
System access

WHERE:
>From remote

OPERATING SYSTEM:
Apple Macintosh OS X
http://secunia.com/product/96/

DESCRIPTION:
Apple has issued a security update for Mac OS X, which fixes multiple
vulnerabilities.

1) Various security issues exist in the PHP Apache module and
scripting environment.

For more information:
SA17371

2) An error in automount makes it possible for malicious file servers
to cause a vulnerable system to mount file systems with reserved
names, which can cause a DoS (Denial of Service) or potentially allow
arbitrary code execution.

3) An input validation error in the BOM framework when unpacking
certain archives can be exploited to cause files to be unpacked to
arbitrary locations via directory traversal attacks.

4) The "passwd" program creates temporary files insecurely, which can
be exploited via symlink attacks to create or overwrite arbitrary
files with "root" privileges.

5) User directories are insecurely mounted when a FileVault image is
created, which may allow unauthorised access to files.

6) An error in IPSec when handling certain error conditions can be
exploited to cause a DoS against VPN connections.

7) An error in the LibSystem component can be exploited by malicious
people to cause a heap-based buffer overflow via applications when
requesting large amounts of memory. This can potentially be exploited
to execute arbitrary code in the context of a vulnerable application.

8) The "Download Validation" in the Mail component fails to warn
users about unsafe file types when an e-mail attachment is
double-clicked.

9) In certain cases a Perl program may fail to drop privileges.

For more information:
SA17922

10) A boundary error in rsync can be exploited by authenticated users
to cause a heap-based buffer overflow when it's allowed to transfer
extended attributes. This can be exploited to crash the rsync service
or execute arbitrary code.

11) A boundary error in WebKit's handling of certain HTML can be
exploited to cause a heap-based buffer overflow. This can be
exploited via a malicious web site to execute arbitrary code on a
user's system.

12) A boundary error in Safari when parsing JavaScript can be
exploited to cause a stack-based buffer overflow and allows execution
of arbitrary code when a malicious web page including specially
crafted JavaScript is viewed.

13) An error in Safari's security model when handling HTTP
redirection can be exploited to execute JavaScript in the local
domain via a specially crafted web site.

14) An error in Safari / LaunchServices may cause a malicious
application to appear as a safe file type. This may cause a malicious
file to be executed automatically when the "Open safe files after
downloading" option is enabled.

This vulnerability is related to:
SA18963

15) An input validation error in the Syndication (Safari RSS)
component can be exploited to conduct cross-site scripting attacks
when subscribing to malicious RSS content.

SOLUTION:
Apply Security Update 2006-001.

Mac OS X 10.4.5 (PPC):
http://www.apple.com/support/downloads/securityupdate2006001macosx1045ppc.html

Mac OS X 10.4.5 Client (Intel):
http://www.apple.com/support/downloads/securityupdate2006001macosx1045clientintel.html

Mac OS X 10.3.9 Client:
http://www.apple.com/support/downloads/securityupdate20060011039client.html

Mac OS X 10.3.9 Server:
http://www.apple.com/support/downloads/securityupdate20060011039server.html

PROVIDED AND/OR DISCOVERED BY:
3) The vendor credits Stéphane Kardas, CERTA.
4) Vade 79 (the vendor also credits Ilja van Sprundel and iDEFENSE).
6) The vendor credits OUSPG from the University of Oulu, NISCC, and
CERT-FI.
7) The vendor credits Neil Archibald, Suresec LTD.
10) The vendor credits Jan-Derk Bakker.
11) The vendor credits Suresec LTD.

ORIGINAL ADVISORY:
Apple:
http://docs.info.apple.com/article.html?artnum=303382

Vade79:
http://fakehalo.us/xosx-passwd.pl

OTHER REFERENCES:
SA18963:
http://secunia.com/advisories/18963/

SA17922:
http://secunia.com/advisories/17922/

SA17371:
http://secunia.com/advisories/17371/

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