Advisory Details

April 8th, 2015

Apple OS X IOKit IOHIDSecurePromptClient Heap Buffer Overflow Privilege Escalation Vulnerability

CVE ID	CVE-2015-1140
CVSS SCORE	6.8, AV:L/AC:L/Au:S/C:C/I:C/A:C
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	OS X
VULNERABILITY DETAILS	This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Apple OS X. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within IOKit IOHIDSecurePromptClient. This does not check the length of an attacker-supplied string to the __InsertBytes method before copying it into a fixed length buffer on the heap. This allows an attacker to execute arbitrary code in the context of the kernel.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT204659
DISCLOSURE TIMELINE	2015-01-08 - Vulnerability reported to vendor 2015-04-08 - Coordinated public release of advisory
CREDIT	lokihardt@ASRT

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