SB2022062041 - Ubuntu update for intel-microcode
Published: June 20, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-0127)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient control flow management. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
2) Information disclosure (CVE-ID: CVE-2021-0145)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to improper initialization of shared resources. A local user can gain unauthorized access to sensitive information on the system.
3) Security features bypass (CVE-ID: CVE-2021-0146)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to hardware allows activation of test or debug logic at runtime. An attacker with physical access to device can execute arbitrary code with elevated privileges.
4) Improper access control (CVE-ID: CVE-2021-33117)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access restrictions. A local user can bypass implemented security restrictions and gain access to sensitive information.
5) Out-of-bounds read (CVE-ID: CVE-2021-33120)
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to a boundary condition in memory subsystem. A local user can trigger out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.
6) 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.
7) 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.
8) 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.
9) Information disclosure (CVE-ID: CVE-2022-21166)
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.
Remediation
Install update from vendor's website.