var-202109-1407
Vulnerability from variot
An access issue was addressed with improved access restrictions. This issue is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. A sandboxed process may be able to circumvent sandbox restrictions. macOS has an unspecified vulnerability.Information may be tampered with. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. Apple macOS is a set of dedicated operating systems developed by Apple Corporation for Mac computers. The following products and versions are affected: Macos: 10.15 19A583, 10.15 19A602, 10.15 19A603, 10.15.1 19B88, 10.15.2 19C57, 10.15.3 19d76, 10.15.4 19E266, 10.15.4 19E287, 10.15.5 19F96, 10.15. 5 19F101, 10.15.6 19G73, 10.15.6 19G2021, 10.15.7 19H2, 10.15.7 19H4, 10.15.7 19H15, 10.15.7 19H114, 10.15.7 19H512, 10.15.7 19H524, 10.15.7 19H1030, 10.15. 7 19H1217. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
APPLE-SA-2021-07-21-2 macOS Big Sur 11.5
macOS Big Sur 11.5 addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212602.
AMD Kernel Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2021-30805: ABC Research s.r.o
AppKit Available for: macOS Big Sur Impact: Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution Description: An information disclosure issue was addressed by removing the vulnerable code. CVE-2021-30790: hjy79425575 working with Trend Micro Zero Day Initiative
Audio Available for: macOS Big Sur Impact: A local attacker may be able to cause unexpected application termination or arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-30781: tr3e
AVEVideoEncoder Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved state management. CVE-2021-30748: George Nosenko
CoreAudio Available for: macOS Big Sur Impact: Processing a maliciously crafted audio file may lead to arbitrary code execution Description: A memory corruption issue was addressed with improved state management. CVE-2021-30775: JunDong Xie of Ant Security Light-Year Lab
CoreAudio Available for: macOS Big Sur Impact: Playing a malicious audio file may lead to an unexpected application termination Description: A logic issue was addressed with improved validation. CVE-2021-30776: JunDong Xie of Ant Security Light-Year Lab
CoreGraphics Available for: macOS Big Sur Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution Description: A race condition was addressed with improved state handling. CVE-2021-30786: ryuzaki
CoreServices Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: This issue was addressed with improved checks. CVE-2021-30783: Ron Waisberg (@epsilan)
CoreStorage Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: An injection issue was addressed with improved validation. CVE-2021-30777: Tim Michaud(@TimGMichaud) of Zoom Video Communications and Gary Nield of ECSC Group plc
CoreText 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-2021-30789: Mickey Jin (@patch1t) of Trend Micro, Sunglin of Knownsec 404 team
Crash Reporter Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: A logic issue was addressed with improved validation. CVE-2021-30774: Yizhuo Wang of Group of Software Security In Progress (G.O.S.S.I.P) at Shanghai Jiao Tong University
CVMS Available for: macOS Big Sur Impact: A malicious application may be able to gain root privileges Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2021-30780: Tim Michaud(@TimGMichaud) of Zoom Video Communications
dyld Available for: macOS Big Sur Impact: A sandboxed process may be able to circumvent sandbox restrictions Description: A logic issue was addressed with improved validation. CVE-2021-30768: Linus Henze (pinauten.de)
FontParser Available for: macOS Big Sur Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: An integer overflow was addressed through improved input validation. CVE-2021-30760: Sunglin of Knownsec 404 team
FontParser Available for: macOS Big Sur Impact: Processing a maliciously crafted tiff file may lead to a denial-of-service or potentially disclose memory contents Description: This issue was addressed with improved checks. CVE-2021-30788: tr3e working with Trend Micro Zero Day Initiative
FontParser Available for: macOS Big Sur Impact: Processing a maliciously crafted font file may lead to arbitrary code execution Description: A stack overflow was addressed with improved input validation. CVE-2021-30759: hjy79425575 working with Trend Micro Zero Day Initiative
Identity Services Available for: macOS Big Sur Impact: A malicious application may be able to access a user’s recent Contacts Description: A permissions issue was addressed with improved validation. CVE-2021-30803: Csaba Fitzl (@theevilbit) of Offensive Security
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-2021-30779: Jzhu, Ye Zhang(@co0py_Cat) of Baidu Security
ImageIO Available for: macOS Big Sur Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: A buffer overflow was addressed with improved bounds checking. CVE-2021-30785: CFF of Topsec Alpha Team, Mickey Jin (@patch1t) of Trend Micro
Intel Graphics Driver Available for: macOS Big Sur Impact: An application may be able to cause unexpected system termination or write kernel memory Description: This issue was addressed with improved checks. CVE-2021-30787: Anonymous working with Trend Micro Zero Day Initiative
Intel Graphics Driver Available for: macOS Big Sur Impact: An application may be able to execute arbitrary code with kernel privileges Description: An out-of-bounds write was addressed with improved input validation. CVE-2021-30766: Liu Long of Ant Security Light-Year Lab CVE-2021-30765: Liu Long of Ant Security Light-Year Lab
IOKit Available for: macOS Big Sur Impact: A local attacker may be able to execute code on the Apple T2 Security Chip Description: Multiple issues were addressed with improved logic. CVE-2021-30784: George Nosenko
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-2021-30793: Zuozhi Fan (@pattern_F_) of Ant Security TianQiong Lab
Kext Management Available for: macOS Big Sur Impact: A malicious application may be able to bypass Privacy preferences Description: This issue was addressed with improved entitlements. CVE-2021-30778: Csaba Fitzl (@theevilbit) of Offensive Security
libxml2 Available for: macOS Big Sur Impact: A remote attacker may be able to cause arbitrary code execution Description: This issue was addressed with improved checks. CVE-2021-3518
Model I/O Available for: macOS Big Sur Impact: Processing a maliciously crafted image may lead to a denial of service Description: A logic issue was addressed with improved validation. CVE-2021-30796: Mickey Jin (@patch1t) of Trend Micro
Model I/O Available for: macOS Big Sur Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: An out-of-bounds write was addressed with improved input validation. CVE-2021-30792: Anonymous working with Trend Micro Zero Day Initiative
Model I/O Available for: macOS Big Sur Impact: Processing a maliciously crafted file may disclose user information Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2021-30791: Anonymous working with Trend Micro Zero Day Initiative
Sandbox Available for: macOS Big Sur Impact: A malicious application may be able to access restricted files Description: This issue was addressed with improved checks. CVE-2021-30782: Csaba Fitzl (@theevilbit) of Offensive Security
TCC Available for: macOS Big Sur Impact: A malicious application may be able to bypass certain Privacy preferences Description: A logic issue was addressed with improved state management. CVE-2021-30798: Mickey Jin (@patch1t) of Trend Micro
WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A type confusion issue was addressed with improved state handling. CVE-2021-30758: Christoph Guttandin of Media Codings
WebKit 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-2021-30795: Sergei Glazunov of Google Project Zero
WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to code execution Description: This issue was addressed with improved checks. CVE-2021-30797: Ivan Fratric of Google Project Zero
WebKit Available for: macOS Big Sur Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2021-30799: Sergei Glazunov of Google Project Zero
Additional recognition
configd We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance.
CoreText We would like to acknowledge Mickey Jin (@patch1t) of Trend Micro for their assistance.
crontabs We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance.
Sandbox We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance.
Spotlight We would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive Security for their assistance.
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/
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. Apple is aware of a report that this issue may have been actively exploited. Entry added September 20, 2021
CUPS We would like to acknowledge an anonymous researcher for their assistance
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"data": "An access issue was addressed with improved access restrictions. This issue is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. A sandboxed process may be able to circumvent sandbox restrictions. macOS has an unspecified vulnerability.Information may be tampered with. Pillow is a Python-based image processing library. \nThere is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. Apple macOS is a set of dedicated operating systems developed by Apple Corporation for Mac computers. The following products and versions are affected: Macos: 10.15 19A583, 10.15 19A602, 10.15 19A603, 10.15.1 19B88, 10.15.2 19C57, 10.15.3 19d76, 10.15.4 19E266, 10.15.4 19E287, 10.15.5 19F96, 10.15. 5 19F101, 10.15.6 19G73, 10.15.6 19G2021, 10.15.7 19H2, 10.15.7 19H4, 10.15.7 19H15, 10.15.7 19H114, 10.15.7 19H512, 10.15.7 19H524, 10.15.7 19H1030, 10.15. 7 19H1217. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\nAPPLE-SA-2021-07-21-2 macOS Big Sur 11.5\n\nmacOS Big Sur 11.5 addresses the following issues. \nInformation about the security content is also available at\nhttps://support.apple.com/HT212602. \n\nAMD Kernel\nAvailable for: macOS Big Sur\nImpact: An application may be able to execute arbitrary code with\nkernel privileges\nDescription: A memory corruption issue was addressed with improved\ninput validation. \nCVE-2021-30805: ABC Research s.r.o\n\nAppKit\nAvailable for: macOS Big Sur\nImpact: Opening a maliciously crafted file may lead to unexpected\napplication termination or arbitrary code execution\nDescription: An information disclosure issue was addressed by\nremoving the vulnerable code. \nCVE-2021-30790: hjy79425575 working with Trend Micro Zero Day\nInitiative\n\nAudio\nAvailable for: macOS Big Sur\nImpact: A local attacker may be able to cause unexpected application\ntermination or arbitrary code execution\nDescription: This issue was addressed with improved checks. \nCVE-2021-30781: tr3e\n\nAVEVideoEncoder\nAvailable for: macOS Big Sur\nImpact: An application may be able to execute arbitrary code with\nkernel privileges\nDescription: A memory corruption issue was addressed with improved\nstate management. \nCVE-2021-30748: George Nosenko\n\nCoreAudio\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted audio file may lead to\narbitrary code execution\nDescription: A memory corruption issue was addressed with improved\nstate management. \nCVE-2021-30775: JunDong Xie of Ant Security Light-Year Lab\n\nCoreAudio\nAvailable for: macOS Big Sur\nImpact: Playing a malicious audio file may lead to an unexpected\napplication termination\nDescription: A logic issue was addressed with improved validation. \nCVE-2021-30776: JunDong Xie of Ant Security Light-Year Lab\n\nCoreGraphics\nAvailable for: macOS Big Sur\nImpact: Opening a maliciously crafted PDF file may lead to an\nunexpected application termination or arbitrary code execution\nDescription: A race condition was addressed with improved state\nhandling. \nCVE-2021-30786: ryuzaki\n\nCoreServices\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to gain root privileges\nDescription: This issue was addressed with improved checks. \nCVE-2021-30783: Ron Waisberg (@epsilan)\n\nCoreStorage\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to gain root privileges\nDescription: An injection issue was addressed with improved\nvalidation. \nCVE-2021-30777: Tim Michaud(@TimGMichaud) of Zoom Video\nCommunications and Gary Nield of ECSC Group plc\n\nCoreText\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted font file may lead to\narbitrary code execution\nDescription: An out-of-bounds read was addressed with improved input\nvalidation. \nCVE-2021-30789: Mickey Jin (@patch1t) of Trend Micro, Sunglin of\nKnownsec 404 team\n\nCrash Reporter\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to gain root privileges\nDescription: A logic issue was addressed with improved validation. \nCVE-2021-30774: Yizhuo Wang of Group of Software Security In\nProgress (G.O.S.S.I.P) at Shanghai Jiao Tong University\n\nCVMS\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to gain root privileges\nDescription: An out-of-bounds write issue was addressed with improved\nbounds checking. \nCVE-2021-30780: Tim Michaud(@TimGMichaud) of Zoom Video\nCommunications\n\ndyld\nAvailable for: macOS Big Sur\nImpact: A sandboxed process may be able to circumvent sandbox\nrestrictions\nDescription: A logic issue was addressed with improved validation. \nCVE-2021-30768: Linus Henze (pinauten.de)\n\nFontParser\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted font file may lead to\narbitrary code execution\nDescription: An integer overflow was addressed through improved input\nvalidation. \nCVE-2021-30760: Sunglin of Knownsec 404 team\n\nFontParser\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted tiff file may lead to a\ndenial-of-service or potentially disclose memory contents\nDescription: This issue was addressed with improved checks. \nCVE-2021-30788: tr3e working with Trend Micro Zero Day Initiative\n\nFontParser\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted font file may lead to\narbitrary code execution\nDescription: A stack overflow was addressed with improved input\nvalidation. \nCVE-2021-30759: hjy79425575 working with Trend Micro Zero Day\nInitiative\n\nIdentity Services\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to access a user\u2019s recent\nContacts\nDescription: A permissions issue was addressed with improved\nvalidation. \nCVE-2021-30803: Csaba Fitzl (@theevilbit) of Offensive Security\n\nImageIO\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted image may lead to arbitrary\ncode execution\nDescription: This issue was addressed with improved checks. \nCVE-2021-30779: Jzhu, Ye Zhang(@co0py_Cat) of Baidu Security\n\nImageIO\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted image may lead to arbitrary\ncode execution\nDescription: A buffer overflow was addressed with improved bounds\nchecking. \nCVE-2021-30785: CFF of Topsec Alpha Team, Mickey Jin (@patch1t) of\nTrend Micro\n\nIntel Graphics Driver\nAvailable for: macOS Big Sur\nImpact: An application may be able to cause unexpected system\ntermination or write kernel memory\nDescription: This issue was addressed with improved checks. \nCVE-2021-30787: Anonymous working with Trend Micro Zero Day\nInitiative\n\nIntel Graphics Driver\nAvailable for: macOS Big Sur\nImpact: An application may be able to execute arbitrary code with\nkernel privileges\nDescription: An out-of-bounds write was addressed with improved input\nvalidation. \nCVE-2021-30766: Liu Long of Ant Security Light-Year Lab\nCVE-2021-30765: Liu Long of Ant Security Light-Year Lab\n\nIOKit\nAvailable for: macOS Big Sur\nImpact: A local attacker may be able to execute code on the Apple T2\nSecurity Chip\nDescription: Multiple issues were addressed with improved logic. \nCVE-2021-30784: George Nosenko\n\nKernel\nAvailable for: macOS Big Sur\nImpact: An application may be able to execute arbitrary code with\nkernel privileges\nDescription: A logic issue was addressed with improved state\nmanagement. \nCVE-2021-30793: Zuozhi Fan (@pattern_F_) of Ant Security TianQiong\nLab\n\nKext Management\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to bypass Privacy\npreferences\nDescription: This issue was addressed with improved entitlements. \nCVE-2021-30778: Csaba Fitzl (@theevilbit) of Offensive Security\n\nlibxml2\nAvailable for: macOS Big Sur\nImpact: A remote attacker may be able to cause arbitrary code\nexecution\nDescription: This issue was addressed with improved checks. \nCVE-2021-3518\n\nModel I/O\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted image may lead to a denial\nof service\nDescription: A logic issue was addressed with improved validation. \nCVE-2021-30796: Mickey Jin (@patch1t) of Trend Micro\n\nModel I/O\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted image may lead to arbitrary\ncode execution\nDescription: An out-of-bounds write was addressed with improved input\nvalidation. \nCVE-2021-30792: Anonymous working with Trend Micro Zero Day\nInitiative\n\nModel I/O\nAvailable for: macOS Big Sur\nImpact: Processing a maliciously crafted file may disclose user\ninformation\nDescription: An out-of-bounds read was addressed with improved bounds\nchecking. \nCVE-2021-30791: Anonymous working with Trend Micro Zero Day\nInitiative\n\nSandbox\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to access restricted\nfiles\nDescription: This issue was addressed with improved checks. \nCVE-2021-30782: Csaba Fitzl (@theevilbit) of Offensive Security\n\nTCC\nAvailable for: macOS Big Sur\nImpact: A malicious application may be able to bypass certain Privacy\npreferences\nDescription: A logic issue was addressed with improved state\nmanagement. \nCVE-2021-30798: Mickey Jin (@patch1t) of Trend Micro\n\nWebKit\nAvailable for: macOS Big Sur\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: A type confusion issue was addressed with improved state\nhandling. \nCVE-2021-30758: Christoph Guttandin of Media Codings\n\nWebKit\nAvailable for: macOS Big Sur\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-2021-30795: Sergei Glazunov of Google Project Zero\n\nWebKit\nAvailable for: macOS Big Sur\nImpact: Processing maliciously crafted web content may lead to code\nexecution\nDescription: This issue was addressed with improved checks. \nCVE-2021-30797: Ivan Fratric of Google Project Zero\n\nWebKit\nAvailable for: macOS Big Sur\nImpact: Processing maliciously crafted web content may lead to\narbitrary code execution\nDescription: Multiple memory corruption issues were addressed with\nimproved memory handling. \nCVE-2021-30799: Sergei Glazunov of Google Project Zero\n\nAdditional recognition\n\nconfigd\nWe would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive\nSecurity for their assistance. \n\nCoreText\nWe would like to acknowledge Mickey Jin (@patch1t) of Trend Micro for\ntheir assistance. \n\ncrontabs\nWe would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive\nSecurity for their assistance. \n\nSandbox\nWe would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive\nSecurity for their assistance. \n\nSpotlight\nWe would like to acknowledge Csaba Fitzl (@theevilbit) of Offensive\nSecurity for their assistance. \n\nInstallation note:\n\nThis update may be obtained from the Mac App Store or\nApple\u0027s Software Downloads web site:\nhttps://support.apple.com/downloads/\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\n-----BEGIN PGP SIGNATURE-----\n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\nMvs1tHLJb/hwxc1Nyi4ojPZNYKNn6Gs/E16VEQt+X33bX3vU18E=\n=fuQ1\n-----END PGP SIGNATURE-----\n\n\n. Apple is aware of a report that this issue may have\nbeen actively exploited. \nEntry added September 20, 2021\n\nCUPS\nWe would like to acknowledge an anonymous researcher for their\nassistance",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.