CVE-2023-30440 : What You Need to Know
Learn about CVE-2023-30440, a medium-severity vulnerability in IBM PowerVM Hypervisor allowing local attackers to cause denial of service or data corruption. Find out how to mitigate and prevent exploitation.
This article provides detailed information on CVE-2023-30440, a vulnerability identified in IBM PowerVM Hypervisor software.
Understanding CVE-2023-30440
CVE-2023-30440 is a vulnerability affecting IBM PowerVM Hypervisor software versions FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00 through FW1020.30, and FW1030.00 through FW1030.10. It could allow a local attacker to cause a denial of service to a peer partition or arbitrary data corruption.
What is CVE-2023-30440?
The CVE-2023-30440 vulnerability is due to improper input validation in the software, leading to a local attacker with control over a partition assigned SRIOV virtual function (VF) to disrupt services or corrupt data.
The Impact of CVE-2023-30440
The impact of CVE-2023-30440 is considered mediumseverity, with a CVSS base score of 6.7. While the confidentiality impact is none, the availability impact is high, potentially causing denial of service attacks or data corruption.
Technical Details of CVE-2023-30440
Vulnerability Description
The vulnerability arises from improper input validation, allowing a local attacker to target a partition with SRIOV VF, leading to denial of service to a peer partition or data corruption.
Affected Systems and Versions
IBM PowerVM Hypervisor versions FW860.00 through FW860.B3, FW950.00 through FW950.70, FW1010.00 through FW1010.50, FW1020.00 through FW1020.30, and FW1030.00 through FW1030.10 are affected by this vulnerability.
Exploitation Mechanism
The exploit requires local access and control over a partition with an assigned SRIOV virtual function, enabling the attacker to disrupt services or corrupt data.
Mitigation and Prevention
Immediate Steps to Take
It is recommended to apply the patches provided by IBM to address the vulnerability and prevent potential attacks.
Long-Term Security Practices
To enhance security posture, regularly update and patch the IBM PowerVM Hypervisor software to mitigate known vulnerabilities and ensure system integrity.
Patching and Updates
Refer to IBM's official advisory for guidance on patching the affected versions of the PowerVM Hypervisor software.