ID

VAR-202202-0094

CVE

CVE-2021-0127

TITLE

plural  Intel(R) Processor  Firmware vulnerability

DESCRIPTION

Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access. plural Intel(R) Processor There is an unspecified vulnerability in the firmware.Denial of service (DoS) It may be put into a state. ========================================================================== Ubuntu Security Notice USN-5535-1 July 28, 2022 Intel Microcode vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: Several security issues were fixed in Intel Microcode. Software Description: - intel-microcode: Processor microcode for Intel CPUs Details: Joseph Nuzman discovered that some Intel processors did not properly initialise shared resources. A local attacker could use this to obtain sensitive information. (CVE-2021-0145) Mark Ermolov, Dmitry Sklyarov and Maxim Goryachy discovered that some Intel processors did not prevent test and debug logic from being activated at runtime. A local attacker could use this to escalate privileges. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-0127) It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21123, CVE-2022-21127) It was discovered that some Intel processors did not completely perform cleanup actions on microarchitectural fill buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21125) Alysa Milburn, Jason Brandt, Avishai Redelman and Nir Lavi discovered that some Intel processors improperly optimised security-critical code. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21151) It was discovered that some Intel processors did not properly perform cleanup during specific special register write operations. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21166) It was discovered that some Intel processors did not properly restrict access in some situations. A local attacker could use this to obtain sensitive information. (CVE-2021-33117) Brandon Miller discovered that some Intel processors did not properly restrict access in some situations. A local attacker could use this to obtain sensitive information or a remote attacker could use this to cause a denial of service (system crash). (CVE-2021-33120) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: intel-microcode 3.20220510.0ubuntu0.16.04.1+esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5535-1 CVE-2021-0127, CVE-2021-0145, CVE-2021-0146, CVE-2021-33117, CVE-2021-33120, CVE-2022-21123, CVE-2022-21125, CVE-2022-21127, CVE-2022-21151, CVE-2022-21166 . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202402-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: intel-microcode: Multiple Vulnerabilities Date: February 19, 2024 Bugs: #832985, #894474 ID: 202402-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been discovered in intel-microcode, the worst of which can lead to privilege escalation. Background ========== Intel IA32/IA64 microcode update data. Affected packages ================= Package Vulnerable Unaffected ---------------------------- -------------------- --------------------- sys-firmware/intel-microcode < 20230214_p20230212 >= 20230214_p20230212 Description =========== Multiple vulnerabilities have been discovered in NVIDIA Drivers. Please review the CVE identifiers referenced below for details. Impact ====== Please review the referenced CVE identifiers for details. Workaround ========== There is no known workaround at this time. Resolution ========== All intel-microcode users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-firmware/intel-microcode-20230214_p20230212" References ========== [ 1 ] CVE-2021-0127 https://nvd.nist.gov/vuln/detail/CVE-2021-0127 [ 2 ] CVE-2021-0146 https://nvd.nist.gov/vuln/detail/CVE-2021-0146 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202402-22 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2024 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5

AFFECTED PRODUCTS