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CVE-2009-1235

7.2 · HIGH

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 memo…

Published Apr 2, 2009appleCWE-264EPSS 0.98%

Overview

CVE-2009-1235 is a high-severity vulnerability affecting apple mac_os_x. It was published on April 2, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from apple. Update mac_os_x to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
applemac_os_x0Affected
applemac_os_x_server0Affected

References

Reflists.apple.com/archives/security-announce/2009/Aug/msg00001.htmlRefsecunia.com/advisories/34424Refsecunia.com/advisories/36096Refsupport.apple.com/kb/HT3757Refwww.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.cRefwww.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.shRefwww.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181Refwww.securityfocus.com/bid/34203Refwww.securitytracker.com/id?1022671Refwww.us-cert.gov/cas/techalerts/TA09-218A.html

How CyberStrike helps

Frequently asked questions

What is CVE-2009-1235?

CVE-2009-1235 is a high-severity vulnerability affecting apple mac_os_x. It was published on April 2, 2009 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2009-1235?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-1235?

Check the references section for vendor advisories and patches from apple. Update mac_os_x to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-1235?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-1235 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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