Advisory Details

March 31st, 2017

Apple iOS legacy-diagnostics Privilege Escalation Vulnerability

ZDI-16-679
ZDI-CAN-3954

CVE ID CVE-2016-7630
CVSS SCORE 4.4, AV:L/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Apple
AFFECTED PRODUCTS iOS
VULNERABILITY DETAILS


This vulnerability allows remote attackers to escalate privileges on vulnerable installations of Apple iOS. User interaction is required to exploit this vulnerability in that the target must connect to a WiFi access point.

The specific flaw exists within the usage of the legacy-diagnostics protocol handler. The issue lies in the launching of a diagnostic application that is able to render webpages outside of the sandbox. An attacker can leverage this vulnerability to escalate privileges outside the context of the sandbox.
ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/HT207422
DISCLOSURE TIMELINE
  • 2016-08-30 - Vulnerability reported to vendor
  • 2017-03-31 - Coordinated public release of advisory
CREDIT 7cd6cbc56470722cd7dea01561796431
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