Apple Mac OS X kernel Mach Port privilege escalation
| macosx-mach-privilege-escalation (38466) |  High Risk |
Description:
The Apple Mac OS X kernel could allow a local attacker to gain elevated privileges on the system, caused by improper handling of the Mach thread port and thread exception port when a setuid application is executed. By creating a Mach port and executing a setuid application, a local attacker could exploit this vulnerability to write arbitrary data in the address space of the setuid process, which could allow the attacker to execute arbitrary code with the privileges of the process.
*CVSS:
| Base Score: | 6.9 |
| Access Vector: | Local |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.1 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Apply Apple Security Update 2007-008 or upgrade to the latest version of Mac OS X (10.4.11 or later), available from the Apple Web site. See References.
References:
- Apple Web site: About the security content of Mac OS X 10.4.11 and Security Update 2007-008.
- iDefense Labs PUBLIC ADVISORY: 11.14.07: Apple Mac OS X Mach Port Inheritance Privilege Escalation Vulnerability.
- BID-26444: Apple Mac OS X v10.4.11 2007-008 Multiple Security Vulnerabilities
- CVE-2007-3749: The kernel in Apple Mac OS X 10.4 through 10.4.10 does not reset the current Mach Thread Port or Thread Exception Port when executing a setuid program, which allows local users to execute arbitrary code by creating the port before launching the setuid program, then writing to the address space of the setuid process.
- SA27643: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- VUPEN/ADV-2007-3868: Apple Mac OS X Command Execution and Denial of Service Vulnerabilities
Platforms Affected:
- Apple Mac OS X 10.4
- Apple Mac OS X 10.4.1
- Apple Mac OS X 10.4.10
- Apple Mac OS X 10.4.2
- Apple Mac OS X 10.4.3
- Apple Mac OS X 10.4.4
- Apple Mac OS X 10.4.5
- Apple Mac OS X 10.4.6
- Apple Mac OS X 10.4.7
- Apple Mac OS X 10.4.8
- Apple Mac OS X 10.4.9
- Apple Mac OS X Server 10.4
- Apple Mac OS X Server 10.4.1
- Apple Mac OS X Server 10.4.10
- Apple Mac OS X Server 10.4.2
- Apple Mac OS X Server 10.4.3
- Apple Mac OS X Server 10.4.4
- Apple Mac OS X Server 10.4.5
- Apple Mac OS X Server 10.4.6
- Apple Mac OS X Server 10.4.7
- Apple Mac OS X Server 10.4.8
- Apple Mac OS X Server 10.4.9
Reported:
Nov 14, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.