About the security content of tvOS 13.3
This document describes the security content of tvOS 13.3.
About Apple security updates
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Apple security documents reference vulnerabilities by CVE-ID when possible.
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tvOS 13.3
Released December 10, 2019
CFNetwork
Available for: Apple TV 4K and Apple TV HD
Impact: An attacker in a privileged network position may be able to bypass HSTS for a limited number of specific top-level domains previously not in the HSTS preload list
Description: A configuration issue was addressed with additional restrictions.
CVE-2019-8834: Rob Sayre (@sayrer)
Entry added April 4, 2020
CFNetwork Proxies
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to gain elevated privileges
Description: This issue was addressed with improved checks.
CVE-2019-8848: Zhuo Liang of Qihoo 360 Vulcan Team
FaceTime
Available for: Apple TV 4K and Apple TV HD
Impact: Processing malicious video via FaceTime may lead to arbitrary code execution
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2019-8830: natashenka of Google Project Zero
Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed by removing the vulnerable code.
CVE-2019-8833: Ian Beer of Google Project Zero
Kernel
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2019-8828: Cim Stordal of Cognite
CVE-2019-8838: Dr Silvio Cesare of InfoSect
libexpat
Available for: Apple TV 4K and Apple TV HD
Impact: Parsing a maliciously crafted XML file may lead to disclosure of user information
Description: This issue was addressed by updating to expat version 2.2.8.
CVE-2019-15903: Joonun Jang
libpcap
Available for: Apple TV 4K and Apple TV HD
Impact: Multiple issues in libpcap
Description: Multiple issues were addressed by updating to libpcap version 1.9.1
CVE-2019-15161
CVE-2019-15162
CVE-2019-15163
CVE-2019-15164
CVE-2019-15165
Entry added April 6, 2020
Security
Available for: Apple TV 4K and Apple TV HD
Impact: An application may be able to execute arbitrary code with system privileges
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2019-8832: Insu Yun of SSLab at Georgia Tech
WebKit
Available for: Apple TV 4K and Apple TV HD
Impact: Visiting a maliciously crafted website may reveal sites a user has visited
Description: An information disclosure issue existed in the handling of the Storage Access API. This issue was addressed with improved logic.
CVE-2019-8898: Michael Kleber of Google
Entry added February 11, 2020, updated February 20, 2020
WebKit
Available for: Apple TV 4K and Apple TV HD
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
CVE-2019-8835: Anonymous working with Trend Micro's Zero Day Initiative, Mike Zhang of Pangu Team
CVE-2019-8844: William Bowling (@wcbowling)
WebKit
Available for: Apple TV 4K and Apple TV HD
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: A use after free issue was addressed with improved memory management.
CVE-2019-8846: Marcin Towalski of Cisco Talos
Additional recognition
Core Data
We would like to acknowledge natashenka of Google Project Zero for their assistance.
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