SB2023020880 - Multiple vulnerabilities in Dell Networking BIOS drivers
Published: February 8, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Improper isolation or compartmentalization (CVE-ID: CVE-2021-0060)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to insufficient compartmentalization in HECI subsystem for the Intel(R) SPS. An attacker with physical access to the system can execute arbitrary code with elevated privileges.
2) Improper access control (CVE-ID: CVE-2021-0092)
The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the firmware. A local administrator can bypass implemented security restrictions and perform a denial of service (DoS) attack.
3) Information disclosure (CVE-ID: CVE-2022-21123)
The vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.
4) Incomplete cleanup (CVE-ID: CVE-2022-21127)
The vulnerability allows a local user to gain access to sensitive information on the system.
The vulnerability exists due to incomplete cleanup in specific special register read operations. A local user can enable information disclosure.
Remediation
Install update from vendor's website.