CVE-2021-30843
Quick assessment
Affected
Apple macOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apple tvOS是美国苹果（Apple）公司的一套智能电视操作系统。 Apple TV 4K 和 Apple TV HD存在缓冲区错误漏洞，该漏洞源于在FontParser中处理字体文件时出现边界错误。攻击者可利用该漏洞诱骗受害者打开特别制作的文档或网页，引发内存损坏，并在目标系统上执行任意代码。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-30843
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apple tvOS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apple tvOS是美国苹果（Apple）公司的一套智能电视操作系统。 Apple TV 4K 和 Apple TV HD存在缓冲区错误漏洞，该漏洞源于在FontParser中处理字体文件时出现边界错误。攻击者可利用该漏洞诱骗受害者打开特别制作的文档或网页，引发内存损坏，并在目标系统上执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-30843
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-30843 (6)
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https://support.apple.com/en-us/HT212819 x_refsource_MISC
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https://support.apple.com/en-us/HT212815 x_refsource_MISC
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https://support.apple.com/en-us/HT212805 x_refsource_MISC
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https://support.apple.com/en-us/HT212807 x_refsource_MISC
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https://support.apple.com/en-us/HT212814 x_refsource_MISC
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https://support.apple.com/en-us/HT212804 x_refsource_MISC
Mailing List Discussions for CVE-2021-30843 (3)
Same Patch Batch · Apple · 2021-10-19 · 27 CVEs total
| CVE-2021-30832 | Apple macOS Big Sur缓冲区错误漏洞 | |
| CVE-2021-30849 | Apple Safari 缓冲区错误漏洞 | |
| CVE-2021-30850 | Apple TV app 安全漏洞 | |
| CVE-2021-30848 | Apple macOS Catalina 缓冲区错误漏洞 | |
| CVE-2021-30846 | 多款 Apple 产品缓冲区错误漏洞 | |
| CVE-2021-30847 | Apple iTunes 缓冲区错误漏洞 | |
| CVE-2021-30845 | Apple macOS Big Sur 缓冲区错误漏洞 | |
| CVE-2021-30844 | Apple macOS Catalina安全漏洞 | |
| CVE-2021-30841 | Apple tvOS 缓冲区错误漏洞 | |
| CVE-2021-30838 | Apple iOS和Apple iPadOS 缓冲区错误漏洞 | |
| CVE-2021-30842 | Apple TV app 缓冲区错误漏洞 | |
| CVE-2021-30835 | Apple iTunes 缓冲区错误漏洞 | |
| CVE-2021-30837 | Apple iPadOS 缓冲区错误漏洞 | |
| CVE-2020-29622 | Apple macOS Catalina竞争条件问题漏洞 | |
| CVE-2021-30830 | Apple macOS Big Sur 缓冲区错误漏洞 | |
| CVE-2021-30828 | Apple macOS Big Sur安全漏洞 | |
| CVE-2021-30829 | Apple macOS Big Sur 安全漏洞 | |
| CVE-2021-30827 | Apple macOS Big Sur 安全漏洞 | |
| CVE-2021-30826 | Apple iOS和Apple iPadOS 缓冲区错误漏洞 | |
| CVE-2021-30807 | Apple iPadOS 缓冲区错误漏洞 |
Showing top 20 of 27 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-30843
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