Vulnerability CVE-2009-1235
Published: 2009-04-02   Modified: 2012-02-13

Description:
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.

See advisories in our WLB2 database:
Topic
Author
Date
High
Mac OS X xnu <= 1228.x (hfs-fcntl) Local Kernel Root
mu-b
05.04.2009

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Apple -> Mac os x 
Apple -> Mac os x server 

 References:
http://www.us-cert.gov/cas/techalerts/TA09-218A.html
http://www.vupen.com/english/advisories/2009/2172
http://www.vupen.com/english/advisories/2009/0822
http://www.securitytracker.com/id?1022671
http://www.securityfocus.com/bid/34203
http://www.milw0rm.com/exploits/8266
http://www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181
http://www.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.sh
http://www.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.c
http://support.apple.com/kb/HT3757
http://secunia.com/advisories/36096
http://secunia.com/advisories/34424
http://lists.apple.com/archives/security-announce/2009/Aug/msg00001.html
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