SB2025041540 - Multiple vulnerabilities in IBM Power Hardware Management Console (HMC)

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Main Vulnerability Database SB2025041540

SB2025041540 - Multiple vulnerabilities in IBM Power Hardware Management Console (HMC)

Published: April 15, 2025

Security Bulletin ID SB2025041540
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2023-20584)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient validation of special address ranges with invalid device table entries (DTEs) in IOMMU. A local user can induce DTE faults to bypass RMP checks in SEV-SNP.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-31315)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper validation in a model specific register (MSR). A malicious application with ring0 access can modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.


3) Incomplete cleanup (CVE-ID: CVE-2023-31356)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incomplete system memory cleanup in SEV firmware. A local privileged user can corrupt guest private memory.


Remediation

Install update from vendor's website.

References