var-202108-1149
Vulnerability from variot
A race condition was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to elevate privileges. This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the handling of directory paths. An attacker can leverage this vulnerability to escalate privileges from low integrity and execute code in the context of root. Apple iOS is an operating system developed for mobile devices. Apple tvOS is a smart TV operating system. Apple watchOS is a smart watch operating system. Apple macOS Big Sur is a mobile application APP of Apple (Apple). Apple iPadOS is an operating system for iPad tablets. ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
APPLE-SA-2021-12-15-5 tvOS 15.2
tvOS 15.2 addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212980.
Audio Available for: Apple TV 4K and Apple TV HD Impact: Parsing a maliciously crafted audio file may lead to disclosure of user information Description: A buffer overflow issue was addressed with improved memory handling. CVE-2021-30960: JunDong Xie of Ant Security Light-Year Lab
CFNetwork Proxies Available for: Apple TV 4K and Apple TV HD Impact: User traffic might unexpectedly be leaked to a proxy server despite PAC configurations Description: A logic issue was addressed with improved state management. CVE-2021-30966: Michal Rajcan of Jamf, Matt Vlasach of Jamf (Wandera)
ColorSync Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: A memory corruption issue in the processing of ICC profiles was addressed with improved input validation. CVE-2021-30926: Jeremy Brown CVE-2021-30942: Mateusz Jurczyk of Google Project Zero
CoreAudio Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution Description: A buffer overflow issue was addressed with improved memory handling. CVE-2021-30957: JunDong Xie of Ant Security Light-Year Lab
CoreAudio Available for: Apple TV 4K and Apple TV HD Impact: Playing a malicious audio file may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved input validation. CVE-2021-30958: JunDong Xie of Ant Security Light-Year Lab
Crash Reporter Available for: Apple TV 4K and Apple TV HD Impact: A local attacker may be able to elevate their privileges Description: This issue was addressed with improved checks. CVE-2021-30945: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com)
ImageIO Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30939: Rui Yang and Xingwei Lin of Ant Security Light-Year Lab, Mickey Jin (@patch1t) of Trend Micro
Kernel Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2021-30916: Zweig of Kunlun Lab
Kernel Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption vulnerability was addressed with improved locking. CVE-2021-30937: Sergei Glazunov of Google Project Zero
Kernel Available for: Apple TV 4K and Apple TV HD Impact: An application may be able to execute arbitrary code with kernel privileges Description: A use after free issue was addressed with improved memory management. CVE-2021-30927: Xinru Chi of Pangu Lab CVE-2021-30980: Xinru Chi of Pangu Lab
Kernel Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved state management. CVE-2021-30949: Ian Beer of Google Project Zero
Kernel Available for: Apple TV 4K and Apple TV HD Impact: An attacker in a privileged network position may be able to execute arbitrary code Description: A buffer overflow issue was addressed with improved memory handling. CVE-2021-30993: OSS-Fuzz, Ned Williamson of Google Project Zero
Kernel Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A race condition was addressed with improved state handling. CVE-2021-30955: Zweig of Kunlun Lab
Preferences Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to elevate privileges Description: A race condition was addressed with improved state handling. CVE-2021-30995: Mickey Jin (@patch1t) of Trend Micro, Mickey Jin (@patch1t)
Sandbox Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to bypass certain Privacy preferences Description: A validation issue related to hard link behavior was addressed with improved sandbox restrictions. CVE-2021-30968: Csaba Fitzl (@theevilbit) of Offensive Security
Sandbox Available for: Apple TV 4K and Apple TV HD Impact: An application may be able to access a user's files Description: An access issue was addressed with additional sandbox restrictions. CVE-2021-30947: Csaba Fitzl (@theevilbit) of Offensive Security
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A buffer overflow issue was addressed with improved memory handling. CVE-2021-30934: Dani Biro
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A use after free issue was addressed with improved memory management. CVE-2021-30936: Chijin Zhou of ShuiMuYuLin Ltd and Tsinghua wingtecher lab CVE-2021-30951: Pangu
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: An integer overflow was addressed with improved input validation. CVE-2021-30952: WeBin
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A race condition was addressed with improved state handling. CVE-2021-30984: Kunlun Lab
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30953: VRIJ
WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A type confusion issue was addressed with improved memory handling. CVE-2021-30954: Kunlun Lab
Additional recognition
Bluetooth We would like to acknowledge Haram Park, Korea University for their assistance.
ColorSync We would like to acknowledge Mateusz Jurczyk of Google Project Zero for their assistance.
Contacts We would like to acknowledge Minchan Park (03stin) for their assistance.
Kernel We would like to acknowledge Amit Klein of Bar-Ilan University's Center for Research in Applied Cryptography and Cyber Security for their assistance.
WebKit We would like to acknowledge Jzhu, Peter Snyder of Brave, and Soroush Karami for their assistance.
Installation note:
Apple TV will periodically check for software updates. Alternatively, you may manually check for software updates by selecting "Settings -> System -> Software Update -> Update Software."
To check the current version of software, select "Settings -> General -> About."
Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222
This message is signed with Apple's Product Security PGP key, and details are available at: https://www.apple.com/support/security/pgp/ -----BEGIN PGP SIGNATURE-----
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This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to elevate privileges. This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the handling of directory paths. An attacker can leverage this vulnerability to escalate privileges from low integrity and execute code in the context of root. Apple iOS is an operating system developed for mobile devices. Apple tvOS is a smart TV operating system. Apple watchOS is a smart watch operating system. Apple macOS Big Sur is a mobile application APP of Apple (Apple). Apple iPadOS is an operating system for iPad tablets. ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\nAPPLE-SA-2021-12-15-5 tvOS 15.2\n\ntvOS 15.2 addresses the following issues. \nInformation about the security content is also available at\nhttps://support.apple.com/HT212980. \n\nAudio\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Parsing a maliciously crafted audio file may lead to\ndisclosure of user information\nDescription: A buffer overflow issue was addressed with improved\nmemory handling. \nCVE-2021-30960: JunDong Xie of Ant Security Light-Year Lab\n\nCFNetwork Proxies\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: User traffic might unexpectedly be leaked to a proxy server\ndespite PAC configurations\nDescription: A logic issue was addressed with improved state\nmanagement. \nCVE-2021-30966: Michal Rajcan of Jamf, Matt Vlasach of Jamf (Wandera)\n\nColorSync\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing a maliciously crafted image may lead to arbitrary\ncode execution\nDescription: A memory corruption issue in the processing of ICC\nprofiles was addressed with improved input validation. \nCVE-2021-30926: Jeremy Brown\nCVE-2021-30942: Mateusz Jurczyk of Google Project Zero\n\nCoreAudio\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing a maliciously crafted audio file may lead to\narbitrary code execution\nDescription: A buffer overflow issue was addressed with improved\nmemory handling. \nCVE-2021-30957: JunDong Xie of Ant Security Light-Year Lab\n\nCoreAudio\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Playing a malicious audio file may lead to arbitrary code\nexecution\nDescription: An out-of-bounds read was addressed with improved input\nvalidation. \nCVE-2021-30958: JunDong Xie of Ant Security Light-Year Lab\n\nCrash Reporter\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A local attacker may be able to elevate their privileges\nDescription: This issue was addressed with improved checks. \nCVE-2021-30945: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020)\nof Tencent Security Xuanwu Lab (xlab.tencent.com)\n\nImageIO\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing a maliciously crafted image may lead to arbitrary\ncode execution\nDescription: An out-of-bounds read was addressed with improved bounds\nchecking. \nCVE-2021-30939: Rui Yang and Xingwei Lin of Ant Security Light-Year\nLab, Mickey Jin (@patch1t) of Trend Micro\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to execute arbitrary code\nwith kernel privileges\nDescription: A memory corruption issue was addressed with improved\nmemory handling. \nCVE-2021-30916: Zweig of Kunlun Lab\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to execute arbitrary code\nwith kernel privileges\nDescription: A memory corruption vulnerability was addressed with\nimproved locking. \nCVE-2021-30937: Sergei Glazunov of Google Project Zero\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: An application may be able to execute arbitrary code with\nkernel privileges\nDescription: A use after free issue was addressed with improved\nmemory management. \nCVE-2021-30927: Xinru Chi of Pangu Lab\nCVE-2021-30980: Xinru Chi of Pangu Lab\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to execute arbitrary code\nwith kernel privileges\nDescription: A memory corruption issue was addressed with improved\nstate management. \nCVE-2021-30949: Ian Beer of Google Project Zero\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: An attacker in a privileged network position may be able to\nexecute arbitrary code\nDescription: A buffer overflow issue was addressed with improved\nmemory handling. \nCVE-2021-30993: OSS-Fuzz, Ned Williamson of Google Project Zero\n\nKernel\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to execute arbitrary code\nwith kernel privileges\nDescription: A race condition was addressed with improved state\nhandling. \nCVE-2021-30955: Zweig of Kunlun Lab\n\nPreferences\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to elevate privileges\nDescription: A race condition was addressed with improved state\nhandling. \nCVE-2021-30995: Mickey Jin (@patch1t) of Trend Micro, Mickey Jin\n(@patch1t)\n\nSandbox\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: A malicious application may be able to bypass certain Privacy\npreferences\nDescription: A validation issue related to hard link behavior was\naddressed with improved sandbox restrictions. \nCVE-2021-30968: Csaba Fitzl (@theevilbit) of Offensive Security\n\nSandbox\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: An application may be able to access a user\u0027s files\nDescription: An access issue was addressed with additional sandbox\nrestrictions. \nCVE-2021-30947: Csaba Fitzl (@theevilbit) of Offensive Security\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: A buffer overflow issue was addressed with improved\nmemory handling. \nCVE-2021-30934: Dani Biro\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: A use after free issue was addressed with improved\nmemory management. \nCVE-2021-30936: Chijin Zhou of ShuiMuYuLin Ltd and Tsinghua\nwingtecher lab\nCVE-2021-30951: Pangu\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: An integer overflow was addressed with improved input\nvalidation. \nCVE-2021-30952: WeBin\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: A race condition was addressed with improved state\nhandling. \nCVE-2021-30984: Kunlun Lab\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: An out-of-bounds read was addressed with improved bounds\nchecking. \nCVE-2021-30953: VRIJ\n\nWebKit\nAvailable for: Apple TV 4K and Apple TV HD\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: A type confusion issue was addressed with improved\nmemory handling. \nCVE-2021-30954: Kunlun Lab\n\nAdditional recognition\n\nBluetooth\nWe would like to acknowledge Haram Park, Korea University for their\nassistance. \n\nColorSync\nWe would like to acknowledge Mateusz Jurczyk of Google Project Zero\nfor their assistance. \n\nContacts\nWe would like to acknowledge Minchan Park (03stin) for their\nassistance. \n\nKernel\nWe would like to acknowledge Amit Klein of Bar-Ilan University\u0027s\nCenter for Research in Applied Cryptography and Cyber Security for\ntheir assistance. \n\nWebKit\nWe would like to acknowledge Jzhu, Peter Snyder of Brave, and Soroush\nKarami for their assistance. \n\nInstallation note:\n\nApple TV will periodically check for software updates. Alternatively,\nyou may manually check for software updates by selecting\n\"Settings -\u003e System -\u003e Software Update -\u003e Update Software.\"\n\nTo check the current version of software, select\n\"Settings -\u003e General -\u003e About.\"\n\nInformation will also be posted to the Apple Security Updates\nweb site: https://support.apple.com/kb/HT201222\n\nThis message is signed with Apple\u0027s Product Security PGP key,\nand details are available at:\nhttps://www.apple.com/support/security/pgp/\n-----BEGIN PGP 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.