CVE-2021-30821
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 macOS是美国苹果（Apple）公司的一套专为Mac计算机所开发的专用操作系统。 Apple MacOS 存在缓冲区错误漏洞，该漏洞源于恶意应用程序可能能够使用内核权限执行任意代码。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-30821
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.
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 macOS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apple macOS是美国苹果（Apple）公司的一套专为Mac计算机所开发的专用操作系统。 Apple MacOS 存在缓冲区错误漏洞，该漏洞源于恶意应用程序可能能够使用内核权限执行任意代码。
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-2021-30821
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2021-30821 (3)
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https://support.apple.com/en-us/HT212872 x_refsource_MISC
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https://support.apple.com/en-us/HT212869 x_refsource_MISC
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https://support.apple.com/en-us/HT212871 x_refsource_MISC
Same Patch Batch · Apple · 2021-10-28 · 19 CVEs total
| CVE-2021-30814 | Apple tvOS 缓冲区错误漏洞 | |
| CVE-2021-30836 | Apple iOS 缓冲区错误漏洞 | |
| CVE-2021-30834 | Apple macOS 输入验证错误漏洞 | |
| CVE-2021-30833 | Apple macOS 输入验证错误漏洞 | |
| CVE-2021-30840 | Apple tvOS 安全漏洞 | |
| CVE-2021-30824 | Apple macOS 缓冲区错误漏洞 | |
| CVE-2021-30817 | macOS 安全漏洞 | |
| CVE-2021-30831 | Apple tvOS 缓冲区错误漏洞 | |
| CVE-2021-30823 | Apple macOS 处理逻辑错误漏洞 | |
| CVE-2020-10005 | Apple macOS Big Sur 资源管理错误漏洞 | |
| CVE-2021-30816 | Apple iOS 安全漏洞 | |
| CVE-2021-30818 | Apple tvOS 安全漏洞 | |
| CVE-2021-30808 | Apple 多款产品安全漏洞 | |
| CVE-2021-30809 | Apple tvOS 资源管理错误漏洞 | |
| CVE-2021-1821 | Apple watchOS 安全漏洞 | |
| CVE-2021-30813 | Apple macOS 权限许可和访问控制问题漏洞 | |
| CVE-2020-29629 | Apple macOS Big Sur 缓冲区错误漏洞 | |
| CVE-2020-9897 | Apple iOS and iPadOS and macOS Big Sur 缓冲区错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-30821
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