SB2022051714 - Multiple vulnerabilities in Intel processors
Published: May 17, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-0154)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input in the BIOS firmware. A local user can escalate privileges on the system.
2) Out-of-bounds write (CVE-ID: CVE-2021-0153)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the BIOS firmware. A local user can run a specially crafted program to trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
3) Improper access control (CVE-ID: CVE-2021-33123)
The vulnerability allows a local user to escalate privileges on the system
The vulnerability exists due to improper access restrictions in the BIOS authenticated code module. A local user can obtain elevated privileges on the system.
4) Uncaught Exception (CVE-ID: CVE-2021-0190)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to uncaught exception in the BIOS firmware. A local user can run a specially crafted program to execute arbitrary code with elevated privileges.
5) Insufficient Control Flow Management (CVE-ID: CVE-2021-33122)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient control flow management in the BIOS firmware. A local user can run a specially crafted program to execute arbitrary code with elevated privileges.
6) Use of Out-of-range Pointer Offset (CVE-ID: CVE-2021-0189)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to use of out-of-range pointer offset in the BIOS firmware. A local user can execute arbitrary code with elevated privileges.
7) Out-of-bounds write (CVE-ID: CVE-2021-33124)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the BIOS authenticated code module. A local user can run a specially crafted program to trigger an out-of-bounds write error and execute arbitrary code with elevated privileges.
8) Unintended proxy or intermediary (CVE-ID: CVE-2021-33103)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to presence of an unintended proxy in the BIOS authenticated code module. A local user can execute arbitrary code with elevated privileges.
9) Input validation error (CVE-ID: CVE-2021-0159)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input in the BIOS authenticated code module. A local user can pass specially crafted data to the affected module and execute arbitrary code on the system with elevated privileges.
10) Return of pointer value outside of expected range (CVE-ID: CVE-2021-0188)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a boundary error in the BIOS firmware. A local user can force the firmware to return pointer value outside of expected range and gain access to potentially sensitive information.
11) Unchecked Return Value (CVE-ID: CVE-2021-0155)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to unchecked return value in the BIOS firmware. A local user can gain access to potentially sensitive information.
Remediation
Install update from vendor's website.