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K
zdiJunzhi Lu(@pwn0rz), Qi Sun and Mickey JinZDI-21-251
HistoryFeb 03, 2021 - 12:00 a.m.

Apple iOS FairplayIOKit Out-Of-Bounds Read Information Disclosure Vulnerability

2021-02-0300:00:00
Junzhi Lu(@pwn0rz), Qi Sun and Mickey Jin
www.zerodayinitiative.com
21
apple ios
fairplayiokit
out-of-bounds read
information disclosure
vulnerability
local attackers
sensitive information
low-privileged code
flaw
validation
user-supplied data
allocated data structure
kernel
arbitrary code.

EPSS

0.001

Percentile

42.1%

This vulnerability allows local attackers to disclose sensitive information on affected installations of Apple iOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the FairplayIOKit kext. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.

EPSS

0.001

Percentile

42.1%