Insecure Data Validation in posix_spawn System Call in Apple Mac OS X 10.8.x

CVE-2013-3954 · MEDIUM Severity

AV:L/AC:M/AU:N/C:C/I:C/A:C

The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.

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