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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3159.2 APPLE-SA-2021-10-26-8 Additional information for APPLE-SA-2021-09-20-5 Safari 15 29 October 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Safari Publisher: Apple Operating System: Mac OS Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2021-30851 CVE-2021-30849 CVE-2021-30848 CVE-2021-30846 CVE-2021-30823 CVE-2021-30818 CVE-2021-30809 Reference: ESB-2021.3560 ESB-2021.3155 ESB-2021.3154 Original Bulletin: https://support.apple.com/HT212816 Revision History: October 29 2021: Vendor added CVE-2021-30818, CVE-2021-30823 and CVE-2021-30809 September 21 2021: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-10-26-8 Additional information for APPLE-SA-2021-09-20-5 Safari 15 Safari 15 addresses the following issues. Information about the security content is also available at https://support.apple.com/HT212816. WebKit Available for: macOS Big Sur and macOS Catalina Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A type confusion issue was addressed with improved state handling. CVE-2021-30818: Amar Menezes (@amarekano) of Zon8Research Entry added October 25, 2021 WebKit Available for: macOS Big Sur and macOS Catalina Impact: An attacker in a privileged network position may be able to bypass HSTS Description: A logic issue was addressed with improved restrictions. CVE-2021-30823: David Gullasch of Recurity Labs Entry added October 25, 2021 WebKit Available for: macOS Big Sur and macOS Catalina 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-2021-30809: an anonymous researcher Entry added October 25, 2021 WebKit Available for: macOS Big Sur and macOS Catalina Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: A memory corruption issue was addressed with improved memory handling. CVE-2021-30846: Sergei Glazunov of Google Project Zero WebKit Available for: macOS Big Sur and macOS Catalina Impact: Processing maliciously crafted web content may lead to code execution Description: A memory corruption issue was addressed with improved memory handling. CVE-2021-30848: Sergei Glazunov of Google Project Zero WebKit Available for: macOS Big Sur and macOS Catalina Impact: Processing maliciously crafted web content may lead to arbitrary code execution Description: Multiple memory corruption issues were addressed with improved memory handling. CVE-2021-30849: Sergei Glazunov of Google Project Zero WebKit Available for: macOS Big Sur and macOS Catalina Impact: Processing maliciously crafted web content may lead to code execution Description: A memory corruption vulnerability was addressed with improved locking. CVE-2021-30851: Samuel Gross of Google Project Zero Installation note: This update may be obtained from the Mac App Store. 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----- iQIzBAEBCAAdFiEEePiLW1MrMjw19XzoeC9qKD1prhgFAmF4hwwACgkQeC9qKD1p rhgS3g/+Lz9oG2wfFTsremHL92HCAd7cmiuwe4y24alEwkTZkieluBPO8EerW8GZ tbJMo/4HiZS4CCQELk9ysSqtMEKjSsMO3KYWLhYhcGZJaFGRCs8q1YPrUcq3N6TD dS1rC9zo9JW8BYDqSAVD4O4J0RF2RFk0UyY6j9wt3RCrCVYq5sE8YAW4WeLQ66T1 K5+7JQ29e+fBT8xvYkHk2iippzarHlVilgXmYeGLE1l3BQshF/uAbv3oNe54TISY VVaez8iglBcOqRfty7xQxrGhg4uoRZfkF8ewxagyqn/23Rgsj1mknKbvNd19q43c oNjcYiBE1KQjd584TXucjg0K8tl+EV1IbqqU8K1OwdqLKp4u/+26U3AUzRs0Ydk6 morCLuv41keDqMnx3Cmi7SZX1ACBskbbFzeYcZsHleoBI3qic1LmG/SgZiTP/z5z r40389hNRQ//RNn0+IuXohTQw4oc4Hl+019aYCx07isa/H2VQmB2zjHbFO0uRfrV Q5Kv90g7MquXfS3YtJKg52THmj1HK32PDwXg62M/PZw3FrLZxQ/8ICju44Lx8kok 4aPN1U7CEoikeitILQ3Xkz2jnHSKmK4q9ko6xsJMz9DmGp+dYAXdI23kfnf8QIRs TsIbNC94c1PkWr5ke2EzLTeFLCyM/6odrzwu6TcGsC+OuMOAjKg= =ZEP6 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYXs7ZuNLKJtyKPYoAQjkSw//Y5jtiFlj1ui7oL34aVCj+NQXic68m3eP dyK633NGB57OEmTnGo72BmIzAQynrks9wpMpIxhVnl/VIrURcwRpwVtsxXUkoQV1 2WQg20LHL4smhtjBcL1/d7PbkaHPMOKJ4J260CFXY9m/GvtIMZxYhCYyngoveu46 af7Pdzr5DSqdHmhzPLeWe0+Wa+3YdDFAXEMF+gqqr0S1I93t0jpjDBOV6EM5anQd gpDOT+0OPR4ef6B/AS6WkKrObxgXXwP4uWn3UXOcFjcNfBIk5uq3fOAqtHipm2G8 rsYgFbPgtprGU2z8AhNhCpabx2+3u67xblQoNtU5R5pwdOkzySGI7blrBKO2djb9 iMfkvpyCmsjvWvKmcDRst844lH4U2op9kdoCWTrkbKs9nP1jLMd3rN9/cke70pC3 qPBjTy+QWWsdSLrhprNeSpYHvH3mWkvm51EtU4qrP0aem+8wAa+XWfT5YGjmh5Ui gLILJxpYclKCJxOPmpTYxRRMzJ+ZnDbPKBWrTBN4nRZ/9paukqKnY/w10gpnnAhA j/bZGJkZjBAxXmGh8d2TPaRFhPDkVQrBs4BathhnyTRhUW63of4fBhX7bKO0mGdx hhkwChkwxqRFQesaN6qqMDoJ0SWczDKcgYaTr5ucflzP1uDd5H/KT/ObCafo5wfR 8R0y2/tBfrc= =aUTM -----END PGP SIGNATURE-----