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TITLE:
Apple Mac OS X "/sbin/service" Weakness

SECUNIA ADVISORY ID:
SA23793

VERIFY ADVISORY:
http://secunia.com/advisories/23793/

CRITICAL:
Not critical

IMPACT:
Privilege escalation

WHERE:
Local system

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

DESCRIPTION:
KF has reported a weakness in Apple Mac OS X, which can be exploited
by malicious, local users to gain escalated privileges.

The weakness is caused due to /sbin/service invoking the "launchctl"
utility without an absolute pathname, and is called by "writeconfig",
which has the setuid bit set. This can be exploited to perform certain
actions with root privileges by placing a malicious "launchctl" binary
in the path.

Successful exploitation requires interaction of an administrative
user.

The weakness is reported in Mac OS X 10.4.8. Other versions may also
be affected.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
KF

ORIGINAL ADVISORY:
http://projects.info-pull.com/moab/MOAB-21-01-2007.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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