LMH has reported a vulnerability in Mac OS X, which can potentially be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an integer overflow error in the "ffs_mountfs()" function when handling UFS filesystem disc images. This can be exploited to cause a heap-based buffer overflow via a specially crafted UFS DMG image.
Successful exploitation may allow the execution of arbitrary code.
NOTE: This is only remotely exploitable via the Safari web browser when the "opening safe files after downloading" option is enabled.
The vulnerability is reported in an updated Mac OS X 10.4.8. Other versions may also be affected.
Solution: Update to Mac OS X 10.4.9 or install Security Update 2007-003.
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
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Subject: Apple Mac OS X UFS ffs_mountfs() Integer Overflow
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