National Cyber-Alert System

Vulnerability Summary for CVE-2009-1238

Overview

Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and earlier allows local users to cause a denial of service (kernel memory corruption) by simultaneously executing the same HFS_SET_PKG_EXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: BID

Name: 34202

Hyperlink:http://www.securityfocus.com/bid/34202

External Source: MILW0RM

Name: 8265

Hyperlink:http://www.milw0rm.com/exploits/8265

External Source: MISC

Name: http://www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181

Hyperlink:http://www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181

External Source: MISC

Name: http://www.digit-labs.org/files/exploits/xnu-vfssysctl-dos.c

Hyperlink:http://www.digit-labs.org/files/exploits/xnu-vfssysctl-dos.c

External Source: SECUNIA

Name: 34424

Hyperlink:http://secunia.com/advisories/34424