ID

VAR-202202-0082

CVE

CVE-2021-0145

TITLE

plural  Intel(R) Processor  Initialization vulnerability in

DESCRIPTION

Improper initialization of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. plural Intel(R) Processor Has an initialization vulnerability.Information may be obtained. ========================================================================== 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. (CVE-2021-0146) It was discovered that some Intel processors did not implement sufficient control flow management. 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

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

information disclosure

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Ubuntu

SOURCES

LAST UPDATE DATE

2024-08-14T13:08:21.016000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE