CVE-2020-26831 Explained : Impact and Mitigation

SAP BusinessObjects BI Platform (Crystal Report) versions 4.1, 4.2, 4.3 are vulnerable to XML entity injection leading to various security risks.

Understanding CVE-2020-26831

This CVE involves a lack of validation in XML entities during crystal report generation, allowing attackers to exploit the system.

What is CVE-2020-26831?

SAP BusinessObjects BI Platform (Crystal Report) versions 4.1, 4.2, 4.3 lack proper validation of uploaded XML entities.
Attackers with basic privileges can inject arbitrary XML entities, leading to internal file and directory disclosure, SSRF, and DoS attacks.

The Impact of CVE-2020-26831

CVSS Score: 9.6 (Critical)
Attack Vector: Network
Confidentiality Impact: High
Availability Impact: High
Scope: Changed
This vulnerability poses a severe risk to the confidentiality and availability of affected systems.

Technical Details of CVE-2020-26831

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The issue arises from the inadequate validation of XML entities during crystal report generation.

Affected Systems and Versions

SAP BusinessObjects BI Platform (Crystal Report) versions 4.1, 4.2, 4.3

Exploitation Mechanism

Attackers with basic privileges can exploit the vulnerability by injecting arbitrary XML entities.

Mitigation and Prevention

Protect your systems from CVE-2020-26831 with these security measures.

Immediate Steps to Take

Apply security patches provided by SAP promptly.
Monitor and restrict access to vulnerable systems.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security training for employees to raise awareness of potential threats.
Employ intrusion detection systems to identify and respond to suspicious activities.

Patching and Updates

Stay informed about security updates and patches released by SAP.