CVE-2020-35556 Explained : Impact and Mitigation

An issue was discovered in Acronis Cyber Protect before 15 Update 1 build 26172. The local notification service misconfigures CORS, leading to information disclosure.

Understanding CVE-2020-35556

This CVE identifies a vulnerability in Acronis Cyber Protect that can result in information disclosure due to misconfigured CORS in the local notification service.

What is CVE-2020-35556?

CVE-2020-35556 is a security flaw in Acronis Cyber Protect that allows for information disclosure by exploiting a misconfiguration in the Cross-Origin Resource Sharing (CORS) policy.

The Impact of CVE-2020-35556

The vulnerability can lead to unauthorized access to sensitive information, potentially compromising the confidentiality of data stored or processed by Acronis Cyber Protect.

Technical Details of CVE-2020-35556

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue arises from the misconfiguration of CORS in the local notification service of Acronis Cyber Protect, enabling attackers to access sensitive information.

Affected Systems and Versions

Product: Acronis Cyber Protect
Versions affected: Before 15 Update 1 build 26172

Exploitation Mechanism

Attackers can exploit the misconfigured CORS to bypass security restrictions and access sensitive data, potentially leading to information disclosure.

Mitigation and Prevention

Protecting systems from CVE-2020-35556 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Acronis Cyber Protect to version 15 Update 1 build 26172 or later to mitigate the vulnerability.
Monitor and restrict network access to prevent unauthorized exploitation.

Long-Term Security Practices

Regularly review and update CORS configurations to ensure secure resource sharing.
Conduct security assessments and audits to identify and address potential vulnerabilities.

Patching and Updates

Apply patches and updates provided by Acronis Cyber Protect promptly to address security vulnerabilities and enhance system protection.