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I. Basic Information for CVE-2021-30771
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS 14.6. Processing a maliciously crafted font file may lead to arbitrary code execution.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apple多款产品缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apple macOS等都是美国苹果(Apple)公司的产品。Apple macOS是一套专为Mac计算机所开发的专用操作系统。Apple macOS Big Sur是一个手机应用APP。WatchOs是一套使用于Apple Watch的手表操作系统。 Apple多款产品存在安全漏洞,该漏洞源于ibFontParser 库用TTF字体制作的数据可能会触发超出已分配数据结构末尾的写操作。攻击者可利用该漏洞在当前进程的上下文中执行代码。
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
VendorProductAffected VersionsCPESubscribe
AppleiOS and iPadOS unspecified ~ 14.6 -
ApplemacOS unspecified ~ 11.4 -
AppletvOS unspecified ~ 14.6 -
ApplewatchOS unspecified ~ 7.5 -
II. Public POCs for CVE-2021-30771
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III. Intelligence Information for CVE-2021-30771
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IV. Related Vulnerabilities
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