SB2022081211 - Multiple vulnerabilities in Dell products
Published: August 12, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 16 secuirty vulnerabilities.
1) 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.
2) Security features bypass (CVE-ID: CVE-2022-0004)
The vulnerability allows an attacker to bypass implemented security restrictions.
The vulnerability exists due to hardware debug modes and processor INIT setting allow to override of locks for some Intel Processors in Intel Boot Guard and Intel Trusted Execution Technology. An unauthenticated attacker with physical access to the system can bypass implemented security restrictions and escalate privileges on the system.
The vulnerability can be also exploited remotely by an authenticated attacker on the local network.
3) Information disclosure (CVE-ID: CVE-2022-21151)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to an error during processor optimization removal or modification of security-critical code. A local privileged user can gain access to potentially sensitive information.
4) Information disclosure (CVE-ID: CVE-2022-0005)
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists due to sensitive information becomes accessible by physical probing of JTAG interface in the Intel Software Guard Extensions (SGX) Platform. An attacker with physical access to the affected device can gain access to sensitive data.
5) 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.
6) 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.
7) 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.
8) 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.
9) 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.
10) 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.
11) 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.
12) 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.
13) 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.
14) 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.
15) Improper access control (CVE-ID: CVE-2022-21131)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access restrictions. A local user can gain access to sensitive information.
16) Input validation error (CVE-ID: CVE-2022-21136)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A local privileged user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.