CVE:CVE-2021-30843
CNNVD:CNNVD-202109-1276
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。
solution:Upgrade apple ipados to a higher version than 14.8,and avoid the version (,14.8); Upgrade apple iphone_os to a higher version than 14.8,and avoid the version (,14.8); Upgrade apple mac_os_x to a higher version than 10.15.6,10.15.7,10.15.7:security_update_2020,10.15.7:security_update_2020-001,10.15.7:security_update_2020-005,10.15.7:security_update_2020-007,10.15.7:security_update_2021-001,10.15.7:security_update_2021-002,10.15.7:security_update_2021-003,10.15.7:security_update_2021-004,10.15.7:supplemental_update,and avoid the version [10.15,10.15.6],10.15.7,10.15.7:security_update_2020,10.15.7:security_update_2020-001,10.15.7:security_update_2020-005,10.15.7:security_update_2020-007,10.15.7:security_update_2021-001,10.15.7:security_update_2021-002,10.15.7:security_update_2021-003,10.15.7:security_update_2021-004,10.15.7:supplemental_update; Upgrade apple macos to a higher version than 11.6,and avoid the version [11.0,11.6); Upgrade apple tvos to a higher version than 15.0,and avoid the version (,15.0); Upgrade apple watchos to a higher version than 8.0,and avoid the version (,8.0)