Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3722 BIOS Reference Code Advisory 10 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIOS Reference Code Publisher: Intel Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-0158 CVE-2021-0157 Original Bulletin: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00562.html - --------------------------BEGIN INCLUDED TEXT-------------------- Intel ID: INTEL-SA-00562 Advisory Category: Firmware Impact of vulnerability : Escalation of Privilege Severity rating : HIGH Original release: 11/09/2021 Last revised: 11/09/2021 Summary: Potential security vulnerabilities in the BIOS reference code for some Intel Processors may allow escalation of privilege. Intel is releasing firmware updates to mitigate these potential vulnerabilities. Vulnerability Details: CVEID: CVE-2021-0157 Description: Insufficient control flow management in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access. CVSS Base Score: 8.2 High CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVEID: CVE-2021-0158 Description: Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access. CVSS Base Score: 8.2 High CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Affected Products: o Intel Xeon Processor E Family o Intel Xeon Processor E3 v6 Family o Intel Xeon Processor W Family o 3rd Generation Intel Xeon Scalable Processors o 11th Generation Intel Core Processors o 10th Generation Intel Core Processors o 7th Generation Intel Core Processors o Intel Core X-series Processors o Intel Celeron Processor N Series o Intel Pentium Silver Processor Series Recommendations: Intel recommends that users of affected Intel Processors update to the latest version provided by the system manufacturer that addresses these issues. Acknowledgements: Intel would like to thank SentinelOne for reporting these issues. 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 11/09/2021 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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. 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 iQIVAwUBYYsWw+NLKJtyKPYoAQgAlg/7BfxanHTuX8JX+2xEtXa4rxqI9Zb+TXsN PTWUkLZGphiVrc3UgVqslLnvOZvgUWdcxS/jvLPBffHSR1EcBIpkYssbdUXyaLdM mqj6QtvsMssxol9gUGQjVRawMYQ969s4ZvXiut8iJj7duv4/PduFt/mUh6sTGEFz qr8bs0GC+KMNPqG+AciB8/zUWgZqaGr71jaXj2Zv9fUu6zzvaMRKxQwWUlH1xYR0 wgYbHS0iLNoF5bpZgDKJOUAhNYPYx+tXFqI399QFQXkQ/93HnFrvPof2fMV2doY0 9wuMmCYNbAnmID12Ru5HHryoUvZnJYFgTeXZEtdxOG9p9Ch0H2xoCTofBcL21CzN z+bMKeeVJV22JbnGh7JPOGhfo70sPwksQgth1WNxTPYWFw2KFRyCftyofMB0/aBm BIrskvOHEloNOeEdR9l4Pwzx9rSa8BH5eYNrDrTmX+K1Fk9A2u3Vea7m4/8gM66N GZMd+j4oCEn3T9FdwVudHa9yxzp8b8465SNaSbZkO3hrP0RfK7n8ahwkXw1aD6/k b45mEIEyuIEO5kEod0H5Hpx8/dDgB81u6z5R7cLc9iPBGT0uKolqmqWkb7lGVN93 rJDDa5TewIKhwyfoTIRzXxCujybKVF9boXZFWJhNBQHW/3TDl8wMV7WSI3JJHdJV 5YuK+etx+zY= =gPu+ -----END PGP SIGNATURE-----