==================================================================== CERT-Renater Note d'Information No. 2021/VULN297 _____________________________________________________________________ DATE : 28/05/2021 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): tvOS versions prior to 14.6. ===================================================================== https://support.apple.com/HT212532 _____________________________________________________________________ APPLE-SA-2021-05-25-7 tvOS 14.6 tvOS 14.6 addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212532. Audio Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-30707: hjy79425575 working with Trend Micro Zero Day Initiative 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: This issue was addressed with improved checks. CVE-2021-30685: Mickey Jin (@patch1t) of Trend Micro CoreAudio Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted audio file may disclose restricted memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30686: Mickey Jin of Trend Micro Crash Reporter Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to modify protected parts of the file system Description: A logic issue was addressed with improved state management. CVE-2021-30727: Cees Elzinga CVMS 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-2021-30724: Mickey Jin (@patch1t) of Trend Micro Heimdal Available for: Apple TV 4K and Apple TV HD Impact: A local user may be able to leak sensitive user information Description: A logic issue was addressed with improved state management. CVE-2021-30697: Gabe Kirkpatrick (@gabe_k) Heimdal Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may cause a denial of service or potentially disclose memory contents Description: A memory corruption issue was addressed with improved state management. CVE-2021-30710: Gabe Kirkpatrick (@gabe_k) ImageIO Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted image may lead to disclosure of user information Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30687: Hou JingYi (@hjy79425575) of Qihoo 360 ImageIO Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted image may lead to disclosure of user information Description: This issue was addressed with improved checks. CVE-2021-30700: Ye Zhang(@co0py_Cat) of Baidu Security ImageIO Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-30701: Mickey Jin (@patch1t) of Trend Micro and Ye Zhang of Baidu Security ImageIO Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted ASTC file may disclose memory contents Description: This issue was addressed with improved checks. CVE-2021-30705: Ye Zhang of Baidu Security 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 logic issue was addressed with improved validation. CVE-2021-30740: Linus Henze (pinauten.de) 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 logic issue was addressed with improved state management. CVE-2021-30704: an anonymous researcher Kernel Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted message may lead to a denial of service Description: A logic issue was addressed with improved state management. CVE-2021-30715: The UK's National Cyber Security Centre (NCSC) 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 buffer overflow was addressed with improved size validation. CVE-2021-30736: Ian Beer of Google Project Zero LaunchServices Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to break out of its sandbox Description: This issue was addressed with improved environment sanitization. CVE-2021-30677: Ron Waisberg (@epsilan) Security Available for: Apple TV 4K and Apple TV HD Impact: Processing a maliciously crafted certificate may lead to arbitrary code execution Description: A memory corruption issue in the ASN.1 decoder was addressed by removing the vulnerable code. CVE-2021-30737: xerub WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. Description: A memory corruption issue was addressed with improved state management. CVE-2021-30665: yangkang (@dnpushme)&zerokeeper&bianliang of 360 ATA WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A cross-origin issue with iframe elements was addressed with improved tracking of security origins. CVE-2021-30744: Dan Hite of jsontop 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-2021-21779: Marcin Towalski of Cisco Talos WebKit Available for: Apple TV 4K and Apple TV HD Impact: A malicious application may be able to leak sensitive user information Description: A logic issue was addressed with improved restrictions. CVE-2021-30682: an anonymous researcher and 1lastBr3ath WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A logic issue was addressed with improved state management. CVE-2021-30689: an anonymous researcher WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2021-30749: an anonymous researcher and mipu94 of SEFCOM lab, ASU. working with Trend Micro Zero Day Initiative CVE-2021-30734: Jack Dates of RET2 Systems, Inc. (@ret2systems) working with Trend Micro Zero Day Initiative WebKit Available for: Apple TV 4K and Apple TV HD Impact: A malicious website may be able to access restricted ports on arbitrary servers Description: A logic issue was addressed with improved restrictions. CVE-2021-30720: David Sch?tz (@xdavidhu) WebKit Available for: Apple TV 4K and Apple TV HD Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. Description: An integer overflow was addressed with improved input validation. CVE-2021-30663: an anonymous researcher Additional recognition ImageIO We would like to acknowledge Jzhu working with Trend Micro Zero Day Initiative and an anonymous researcher for their assistance. WebKit We would like to acknowledge Chris Salls (@salls) of Makai Security for their assistance. 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/ ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================