Chromecast Security Bulletin—July 2022

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Published July 18, 2022

The Chromecast Security Bulletin contains details of security vulnerabilities affecting supported Chromecast with Google TV devices (Chromecast devices). For Chromecast devices, security patch levels of 2022-02-05 or later address all applicable issues in the February 2022 Android Security Bulletin and all issues in this bulletin. To learn how to check a device's security patch level, see Chromecast firmware versions & release notes.
All supported Chromecast devices will receive an update to the 2022-02-05 patch level. We encourage all customers to accept these updates to their devices.

Announcements

Security patches

Vulnerabilities are grouped under the component that they affect. There is a description of the issue and a table with the CVE, associated references, type of vulnerability, severity, and updated Android Open Source Project (AOSP) versions (where applicable).

AMLogic

CVE References Type Severity Component
CVE-2022-20363 A-210068010* EoP High U-Boot

Framework

CVE References Type Severity Updated AOSP versions
CVE-2021-39692 A-209611539 EoP High 10
CVE-2021-39796 A-205595291 EoP High 10
CVE-2022-20004 A-179699767 EoP High 10
CVE-2022-20005 A-219044664 EoP High 10
CVE-2022-20007 A-211481342 EoP High 10
CVE-2021-39700 A-201645790 ID Moderate 10

Media Framework

CVE References Type Severity Updated AOSP versions
CVE-2021-39667 A-205702093 ID High 10
CVE-2021-39803 A-193790350 ID High 10

System

CVE References Type Severity Updated AOSP versions
CVE-2021-0957 A-193149550 [2] EoP High 10
CVE-2021-39704 A-209965481 EoP High 10
CVE-2021-39706 A-200164168 [2] EoP High 10
CVE-2021-39707 A-200688991 EoP High 10
CVE-2021-39807 A-209446496 EoP High 10
CVE-2021-39808 A-209966086 EoP High 10
CVE-2022-20114 A-211114016 EoP High 10
CVE-2021-39809 A-205837191 ID High 10
CVE-2022-20011 A-214999128 ID High 10
CVE-2022-20112 A-206987762 DoS High 10

Functional patches

For details on the new bug fixes and functional patches included in this release, refer to the Chromecast firmware versions & release notes.

Common questions and answers

This section answers common questions that may occur after reading this bulletin.

1. How do I determine if my device is updated to address these issues?

Security patch levels of 2022-02-05 or later address all issues associated with the 2022-02-05 security patch level and all previous patch levels. To learn how to check a device's security patch level, read the instructions on the Chromecast firmware versions & release notes.

2. Why are security vulnerabilities split between this bulletin and the Android Security Bulletins?

Security vulnerabilities that are documented in the Android Security Bulletins are required to declare the latest security patch level on Android devices. Additional security vulnerabilities, such as those documented in this bulletin are not required for declaring a security patch level.

3. What do the entries in the Type column mean?
Entries in the Type column of the vulnerability details table reference the classification of the security vulnerability.


Abbreviation

Definition
RCE Remote code execution
EoP Elevation of privilege
ID Information disclosure
DoS Denial of service
N/A Classification not available

4. What do the entries in the References column mean?
Entries under the References column of the vulnerability details table may contain a prefix identifying the organization to which the reference value belongs.

Prefix Reference
A- Android bug ID

5. What does an * next to the Android bug ID in the References column mean?
Issues that are not publicly available have an * next to the Android bug ID in the References column.

Versions

Version Date Notes
1.0 July 18, 2022 Bulletin Released