Advisory Details

April 8th, 2015

(Pwn2Own) Apple Safari Uninitialized Buffer Use-After-Free Remote Code Execution Vulnerability

ZDI-15-123
ZDI-CAN-2836

CVE ID CVE-2015-1069
CVSS SCORE 6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Apple
AFFECTED PRODUCTS Safari
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['19618']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. 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 the handling of arguments to JavaScript functions. The issue lies in the failure to fully initialize a buffer. By manipulating a function's arguments an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.
ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-us/HT204661
DISCLOSURE TIMELINE
  • 2015-04-08 - Vulnerability reported to vendor
  • 2015-04-08 - Coordinated public release of advisory
CREDIT lokihardt@ASRT
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