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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3096 Intel BIOS Advisory 9 September 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Intel BIOS firmware Publisher: Intel Operating System: Network Appliance Impact/Access: Denial of Service -- Existing Account Increased Privileges -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-8672 CVE-2020-8671 CVE-2019-14558 CVE-2019-14557 CVE-2019-14556 Reference: ESB-2020.1558 Original Bulletin: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00356.html - --------------------------BEGIN INCLUDED TEXT-------------------- Intel ID: INTEL-SA-00356 Advisory Category: Firmware Impact of Escalation of Privilege, Denial of Service, Information vulnerability : Disclosure Severity rating : MEDIUM Original release: 09/08/2020 Last revised: 09/08/2020 Summary: Potential security vulnerabilities in BIOS firmware for multiple Intel Platforms may allow escalation of privilege, denial of service and/or information disclosure. Intel is releasing BIOS updates to mitigate these potential vulnerabilities. Vulnerability Details: CVEID: CVE-2020-8672 Description: Out of bound read in BIOS firmware for 8th, 9 ^ th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 Series Processors may allow an unauthenticated user to potentially enable elevation of privilege or denial of service via local access. CVSS base Score: 5.1 Medium CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVEID: CVE-2019-14557 Description: Buffer overflow in BIOS firmware for 8th, 9 ^ th , 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable elevation of privilege or denial of service via adjacent access. CVSS base Score: 4.6 Medium CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L CVEID: CVE-2019-14558 Description: Insufficient control flow management in BIOS firmware for 8th, 9 ^ th , 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable denial of service via adjacent access. CVSS base Score: 3.0 Low CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L CVEID: CVE-2020-8671 Description: Insufficient control flow management in BIOS firmware 8th, 9 ^ th Generation Intel(R) Core(TM) Processors and Intel(R) Celeron(R) Processor 4000 Series may allow an authenticated user to potentially enable information disclosure via local access. CVSS base Score: 5.0 Medium CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N CVEID: CVE-2019-14556 Description: Improper initialization in BIOS firmware for 8th, 9th,10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow a privileged user to potentially enable denial of service via local access. CVSS base Score: 2.0 Low CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L Affected Products: o 8th Generation Intel Core Processor o 9th Generation Intel Core Processor o 10th Generation Intel Core i7 Processor o Intel Celeron Processor 5000 Series o Intel Celeron Processor 4000 Series Recommendations: Intel recommends that users of above Intel products update to the latest BIOS version provided by the system manufacturer that addresses these issues. Acknowledgements: These issues were found internally by Intel. Intel, and nearly the entire technology industry, follows a disclosure practice called Coordinated Disclosure, under which a cybersecurity vulnerability is generally publicly disclosed only after mitigations are available. Revision History Revision Date Description 1.0 09/08/2020 Initial Release - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBX1h5L+NLKJtyKPYoAQjjYg//YrqwJUQnrzSPeVAPrVYErTbF3l4GN040 nwsIXrUS9XVPk2PiZzoi5N5bgAh5fWLlShCW3BtmiQi3HIKs17MbgOwsaKsynpz0 f1+GFvw/Mj0sFateh7B+Rye5vATLr8ezCUQAUT/Gxhup9OmX2XpCAG61/gYNRenP aw5uT4j8Ij9SAEA7RPWUKLx8vMOEH+0M3LMDFB5wGTVfTXK/lpAHUtf+LFEu+GIv OyoyekH546malodL2ZgMzPP66Q+V9+tXlkuAyaZ4+W6qNQLX6pyv+zgPzJ3TE0Rf Z28OaYxkxFtojxffAf7D4dVwZIR+LLSY93VXooRjETLgV1DpnNCFyS6xrv2K7ss8 c4SwTKmOiCpgkRjBZR/KlRwWZMcbVh8G7z+rBKKEiBPC58JD0VIaJycf8ebjAyoF UIFhgwqVcfSYdIQylL9VSmDKVegbVTQplrSfhwv8q+Emph0smH6V6Ddz6BkAWxjX lfuOqsN+2mfeqFbUx3XqCOpVPCYm/z2RNVDwJNTCSrOxx0dthXhr8vL0VLApTAS1 MTsCT7mCsrd8gYqI4XA+csE3gI0u7e4/FgZTtn6P884TCdtuRGFwbLWSuE1hKmaZ XXmo13NDO5P3DYjENWTc4lxVNvxoRU1ZKvzp/F0OyuCNyZmBVknN75u4js1Yso83 1a22heo7RGo= =u8t9 -----END PGP SIGNATURE-----