CVE-2021-39063 : Security Advisory and Response

This article provides insights into CVE-2021-39063, a vulnerability in IBM Spectrum Protect Plus that could allow attackers to carry out privileged actions.

Understanding CVE-2021-39063

CVE-2021-39063 is a vulnerability in IBM Spectrum Protect Plus versions 10.1.0.0 through 10.1.8.x that stems from a misconfiguration in Cross-Origin Resource Sharing (CORS), enabling attackers to perform unauthorized actions.

What is CVE-2021-39063?

CVE-2021-39063 pertains to a misconfiguration in CORS in IBM Spectrum Protect Plus versions 10.1.0.0 through 10.1.8.x. This misconfiguration could empower attackers to execute privileged actions and access sensitive data.

The Impact of CVE-2021-39063

The vulnerability has the following impact based on CVSS v3.0 metrics:

Base Score: 6.5 (Medium)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: None
Privileges Required: None
User Interaction: None
Vector String: CVSS:3.0/AV:N/UI:N/C:L/I:L/A:N/S:U/PR:N/AC:L/RL:O/E:U/RC:C

Technical Details of CVE-2021-39063

CVE-2021-39063 has the following technical details:

Vulnerability Description

The vulnerability in IBM Spectrum Protect Plus arises from CORS misconfigurations, leading to potential privileged action abuse and exposure of sensitive data.

Affected Systems and Versions

IBM Spectrum Protect Plus versions 10.1.0.0 through 10.1.8.x are affected by this vulnerability.

Exploitation Mechanism

The vulnerability allows attackers to leverage misconfigured CORS settings to carry out unauthorized actions and gain access to sensitive information.

Mitigation and Prevention

It is crucial to take immediate steps and implement long-term security practices to mitigate the risks associated with CVE-2021-39063.

Immediate Steps to Take

Verify and apply the official fix provided by IBM.
Review and adjust the CORS settings to enhance security.

Long-Term Security Practices

Regularly monitor and update CORS configurations.
Conduct security assessments to identify and remediate misconfigurations.

Patching and Updates

Stay updated with security advisories from IBM.
Apply patches and updates promptly to address vulnerabilities.