-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-04-26-2 macOS Big Sur 11.3 macOS Big Sur 11.3 addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212325. APFS Available for: macOS Big Sur Impact: A local attacker may be able to elevate their privileges Description: A logic issue was addressed with improved state management. CVE-2021-1853: Gary Nield of ECSC Group plc and Tim Michaud(@TimGMichaud) of Zoom Video Communications AppleMobileFileIntegrity Available for: macOS Big Sur Impact: A malicious application may be able to bypass Privacy preferences Description: An issue in code signature validation was addressed with improved checks. CVE-2021-1849: Siguza Apple Neural Engine Available for: macOS Big Sur Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: An out-of-bounds read was addressed with improved input validation. CVE-2021-1867: Zuozhi Fan (@pattern_F_) and Wish Wu(吴潍浠) of Ant Group Tianqiong Security Lab Archive Utility Available for: macOS Big Sur Impact: A malicious application may bypass Gatekeeper checks Description: A logic issue was addressed with improved state management. CVE-2021-1810: an anonymous researcher Audio Available for: macOS Big Sur Impact: An application may be able to read restricted memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1808: JunDong Xie of Ant Security Light-Year Lab CFNetwork Available for: macOS Big Sur Impact: Processing maliciously crafted web content may disclose sensitive user information Description: A memory initialization issue was addressed with improved memory handling. CVE-2021-1857: an anonymous researcher CoreAudio Available for: macOS Big Sur Impact: Processing a maliciously crafted audio file may disclose restricted memory Description: An out-of-bounds read was addressed with improved input validation. CVE-2021-1846: JunDong Xie of Ant Security Light-Year Lab CoreAudio Available for: macOS Big Sur Impact: A malicious application may be able to read restricted memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1809: JunDong Xie of Ant Security Light-Year Lab CoreFoundation Available for: macOS Big Sur Impact: A malicious application may be able to leak sensitive user information Description: A validation issue was addressed with improved logic. CVE-2021-30659: Thijs Alkemade of Computest CoreGraphics Available for: macOS Big Sur Impact: Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution Description: A memory corruption issue was addressed with improved validation. CVE-2021-1847: Xuwei Liu of Purdue University CoreText Available for: macOS Big Sur Impact: Processing a maliciously crafted font may result in the disclosure of process memory Description: A logic issue was addressed with improved state management. CVE-2021-1811: Xingwei Lin of Ant Security Light-Year Lab curl Available for: macOS Big Sur Impact: An attacker may provide a fraudulent OCSP response that would appear valid Description: This issue was addressed with improved checks. CVE-2020-8286: an anonymous researcher curl Available for: macOS Big Sur Impact: A remote attacker may be able to cause a denial of service Description: A buffer overflow was addressed with improved input validation. CVE-2020-8285: xnynx DiskArbitration Available for: macOS Big Sur Impact: A malicious application may be able to modify protected parts of the file system Description: A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks. CVE-2021-1784: Mikko Kenttälä (@Turmio_) of SensorFu, Csaba Fitzl (@theevilbit) of Offensive Security, and an anonymous researcher FaceTime Available for: macOS Big Sur Impact: Muting a CallKit call while ringing may not result in mute being enabled Description: A logic issue was addressed with improved state management. CVE-2021-1872: Siraj Zaneer of Facebook FontParser Available for: macOS Big Sur Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: An out-of-bounds read was addressed with improved input validation. CVE-2021-1881: an anonymous researcher, Xingwei Lin of Ant Security Light-Year Lab, Mickey Jin of Trend Micro, and Hou JingYi (@hjy79425575) of Qihoo 360 Foundation Available for: macOS Big Sur Impact: An application may be able to gain elevated privileges Description: A memory corruption issue was addressed with improved validation. CVE-2021-1882: Gabe Kirkpatrick (@gabe_k) Foundation Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: A validation issue was addressed with improved logic. CVE-2021-1813: Cees Elzinga Heimdal Available for: macOS Big Sur Impact: Processing maliciously crafted server messages may lead to heap corruption Description: This issue was addressed with improved checks. CVE-2021-1883: Gabe Kirkpatrick (@gabe_k) Heimdal Available for: macOS Big Sur Impact: A remote attacker may be able to cause a denial of service Description: A race condition was addressed with improved locking. CVE-2021-1884: Gabe Kirkpatrick (@gabe_k) ImageIO Available for: macOS Big Sur Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-1880: Xingwei Lin of Ant Security Light-Year Lab CVE-2021-30653: Ye Zhang of Baidu Security CVE-2021-1814: Ye Zhang of Baidu Security, Mickey Jin & Qi Sun of Trend Micro, and Xingwei Lin of Ant Security Light-Year Lab CVE-2021-1843: Ye Zhang of Baidu Security ImageIO Available for: macOS Big Sur 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-2021-1885: CFF of Topsec Alpha Team ImageIO Available for: macOS Big Sur Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2021-1858: Mickey Jin of Trend Micro Installer Available for: macOS Big Sur Impact: A malicious application may bypass Gatekeeper checks Description: This issue was addressed with improved handling of file metadata. CVE-2021-30658: Wojciech Reguła (@_r3ggi) of SecuRing Intel Graphics Driver Available for: macOS Big Sur Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2021-1841: Jack Dates of RET2 Systems, Inc. CVE-2021-1834: ABC Research s.r.o. working with Trend Micro Zero Day Initiative Kernel Available for: macOS Big Sur Impact: A malicious application may be able to disclose kernel memory Description: A memory initialization issue was addressed with improved memory handling. CVE-2021-1860: @0xalsr Kernel Available for: macOS Big Sur Impact: A local attacker may be able to elevate their privileges Description: A memory corruption issue was addressed with improved validation. CVE-2021-1840: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab Kernel Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with kernel privileges Description: A logic issue was addressed with improved state management. CVE-2021-1851: @0xalsr Kernel Available for: macOS Big Sur Impact: Copied files may not have the expected file permissions Description: The issue was addressed with improved permissions logic. CVE-2021-1832: an anonymous researcher Kernel Available for: macOS Big Sur Impact: A malicious application may be able to disclose kernel memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30660: Alex Plaskett libxpc Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: A race condition was addressed with additional validation. CVE-2021-30652: James Hutchins libxslt Available for: macOS Big Sur Impact: Processing a maliciously crafted file may lead to heap corruption Description: A double free issue was addressed with improved memory management. CVE-2021-1875: Found by OSS-Fuzz Login Window Available for: macOS Big Sur Impact: A malicious application with root privileges may be able to access private information Description: This issue was addressed with improved entitlements. CVE-2021-1824: Wojciech Reguła (@_r3ggi) of SecuRing Notes Available for: macOS Big Sur Impact: Locked Notes content may have been unexpectedly unlocked Description: A logic issue was addressed with improved state management. CVE-2021-1859: Syed Ali Shuja (@SyedAliShuja) of Colour King Pvt. Ltd NSRemoteView Available for: macOS Big Sur 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-2021-1876: Matthew Denton of Google Chrome Preferences Available for: macOS Big Sur Impact: A local user may be able to modify protected parts of the file system Description: A parsing issue in the handling of directory paths was addressed with improved path validation. CVE-2021-1815: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com) CVE-2021-1739: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com) CVE-2021-1740: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020) of Tencent Security Xuanwu Lab (xlab.tencent.com) Safari Available for: macOS Big Sur Impact: A malicious website may be able to track users by setting state in a cache Description: An issue existed in determining cache occupancy. The issue was addressed through improved logic. CVE-2021-1861: Konstantinos Solomos of University of Illinois at Chicago Safari Available for: macOS Big Sur Impact: A malicious website may be able to force unnecessary network connections to fetch its favicon Description: A logic issue was addressed with improved state management. CVE-2021-1855: Håvard Mikkelsen Ottestad of HASMAC AS SampleAnalysis Available for: macOS Big Sur Impact: A local attacker may be able to elevate their privileges Description: A logic issue was addressed with improved state management. CVE-2021-1868: Tim Michaud of Zoom Communications smbx Available for: macOS Big Sur Impact: An attacker in a privileged network position may be able to leak sensitive user information Description: An integer overflow was addressed with improved input validation. CVE-2021-1878: Aleksandar Nikolic of Cisco Talos (talosintelligence.com) System Preferences Available for: macOS Big Sur Impact: A malicious application may bypass Gatekeeper checks Description: A logic issue was addressed with improved state management. CVE-2021-30657: an anonymous researcher tcpdump Available for: macOS Big Sur Impact: A remote attacker may be able to cause a denial of service Description: This issue was addressed with improved checks. CVE-2020-8037: an anonymous researcher Time Machine Available for: macOS Big Sur Impact: A local attacker may be able to elevate their privileges Description: The issue was addressed with improved permissions logic. CVE-2021-1839: Tim Michaud(@TimGMichaud) of Zoom Video Communications and Gary Nield of ECSC Group plc WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to a cross site scripting attack Description: An input validation issue was addressed with improved input validation. CVE-2021-1825: Alex Camboe of Aon’s Cyber Solutions WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A memory corruption issue was addressed with improved state management. CVE-2021-1817: an anonymous researcher WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to universal cross site scripting Description: A logic issue was addressed with improved restrictions. CVE-2021-1826: an anonymous researcher WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may result in the disclosure of process memory Description: A memory initialization issue was addressed with improved memory handling. CVE-2021-1820: an anonymous researcher WebKit Storage Available for: macOS Big Sur 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 use after free issue was addressed with improved memory management. CVE-2021-30661: yangkang(@dnpushme) of 360 ATA WebRTC Available for: macOS Big Sur Impact: A remote attacker may be able to cause unexpected system termination or corrupt kernel memory Description: A use after free issue was addressed with improved memory management. CVE-2020-7463: Megan2013678 Wi-Fi Available for: macOS Big Sur Impact: An application may be able to cause unexpected system termination or write kernel memory Description: A memory corruption issue was addressed with improved validation. CVE-2021-1828: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab Wi-Fi Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with kernel privileges Description: A type confusion issue was addressed with improved state handling. CVE-2021-1829: Tielei Wang of Pangu Lab Wi-Fi Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with system privileges Description: The issue was addressed with improved permissions logic. CVE-2021-30655: Gary Nield of ECSC Group plc and Tim Michaud(@TimGMichaud) of Zoom Video Communications and Wojciech Reguła (@_r3ggi) of SecuRing Windows Server Available for: macOS Big Sur Impact: A malicious application may be able to unexpectedly leak a user's credentials from secure text fields Description: An API issue in Accessibility TCC permissions was addressed with improved state management. CVE-2021-1873: an anonymous researcher Installation note: This update may be obtained from the Mac App Store or Apple's Software Downloads web site: https://support.apple.com/downloads/ 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----- iQIzBAEBCAAdFiEEbURczHs1TP07VIfuZcsbuWJ6jjAFAmCHO0UACgkQZcsbuWJ6 jjA/XA/7BDDpbLo0btLbUrps6ELmcqFZhpvhuekw8Yd3jVeJihLcJGJpY38ZCcne srCJHuXPzlk3ex0bVkKNRrB04xF0vCA4TEBsJ495754PAKWrxmlx0Ce8zg4h+ey/ cMTaUgfB1sgOFO8kJCKJurCjhyQ3Xj5c5xa8/zxlKoAgI36PmhZsCoXC6KD+5mqn QCRF0kE/y0QSfsq13j4grLGMXLS4pkAJRMWvDiEliYDTw3pOul7ZDOwxLEyucVTv fE60H7ff7jfPbDcQ4yEgEbla40+YZYwl9Sv4zxIU2OBPva6HLbA+PXxk4F1QX7eA ECrfycMSIbQKZ2phryENZCcrX5DN4M/VcGIHq4ujF2CXBJymSWV0O5k5K0GzZ0Ko T2Zr2LOOunvHGrYy0okholNYb0iMA09dvwuDdEGr+vhLZhq1BBbmThhNEnArl7mE /fx2bvaS3o8TxGuh7mbeFK9q5Tafxe5Qhwgz9pnAtqBC8z1NgQoetk9pKPNDIsNY t3/7Xcix+fs28YOjmxPTpntud0EGSjxXm4g0bDbsU922iV1Z3ncgOvd//IzPXniS v4IqR/gPbhg+c2CGoaezD91sE5onLuMmFCogkUyftGHnN0EueKMjI+3fmyG4l4d1 0C3to6hKJNmTm56RgxwfVVOeVnsPF490s9LUYzO4ZUbaQHIuDfo= =9+Ju -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. 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