CVE-2021-26587 : Vulnerability Insights and Analysis

A potential DOM-based Cross Site Scripting security vulnerability has been identified in HPE StoreOnce. The vulnerability could be remotely exploited to cause an elevation of privilege leading to partial impact to confidentiality, availability, and integrity. HPE has released software update HPE StoreOnce 4.3.0 to address this vulnerability.

Understanding CVE-2021-26587

This section will provide insights into the nature and impact of CVE-2021-26587.

What is CVE-2021-26587?

CVE-2021-26587 is a DOM-based Cross Site Scripting vulnerability found in HPE StoreOnce. Attackers could exploit this flaw remotely, resulting in an escalation of privilege and affecting the confidentiality, availability, and integrity of the system.

The Impact of CVE-2021-26587

The vulnerability poses a significant risk as it could allow attackers to gain unauthorized access, manipulate data, disrupt services, and compromise the overall security of the affected systems.

Technical Details of CVE-2021-26587

In this section, we will delve deeper into the technical aspects related to CVE-2021-26587.

Vulnerability Description

The vulnerability stems from improper handling of user-supplied input by the affected HPE StoreOnce firmware versions. This could be exploited through malicious web content to execute arbitrary script code in the context of the user's browser.

Affected Systems and Versions

HPE StoreOnce versions 4.2.3 and earlier are impacted by this vulnerability. Specifically, HPE StoreOnce 3620, 3640, 5200, 5250, 5650, and VSA 4TB with firmware versions 4.2.3 and earlier are vulnerable.

Exploitation Mechanism

Attackers can trigger the exploit by enticing a user to visit a specially crafted web page, leading to the execution of malicious scripts in the user's browser, potentially compromising sensitive information.

Mitigation and Prevention

This section will outline essential steps to mitigate the risks associated with CVE-2021-26587.

Immediate Steps to Take

Users are advised to apply the security patch provided by HPE, upgrading affected StoreOnce devices to version 4.3.0 to mitigate the vulnerability.
Additionally, users should avoid clicking on unsolicited links or visiting untrusted websites to reduce the risk of exploitation.

Long-Term Security Practices

Regularly update and patch all software and firmware to the latest versions to address known vulnerabilities and enhance system security.
Educate users and administrators about safe browsing practices and the potential risks associated with opening unknown links or attachments.

Patching and Updates

It is crucial for organizations to stay informed about security updates and advisories from HPE to promptly address any emerging vulnerabilities and ensure the continued protection of their infrastructure.