CVE-2021-42537 : Vulnerability Insights and Analysis
Learn about CVE-2021-42537 affecting VISAM VBASE Editor with an improper XML restriction. Discover impact, affected versions, and mitigation steps to secure your system.
VISAM VBASE Editor suffers from an improper restriction of XML vulnerability that allows the processing of XML entities with URIs pointing to external documents, leading to incorrect output embedding.
Understanding CVE-2021-42537
VISAM VBASE version 11.6.0.6 is prone to an XML vulnerability with a CVSS base score of 5.9.
What is CVE-2021-42537?
The issue arises from the product's mishandling of XML documents, enabling the inclusion of unintended external resources in the output.
The Impact of CVE-2021-42537
- High confidentiality impact, low integrity impact
- Requires user interaction for exploitation
- No availability impact
Technical Details of CVE-2021-42537
The vulnerability details and mitigation steps:
Vulnerability Description
VISAM VBASE version 11.6.0.6 processes XML entities outside the intended control sphere, leading to incorrect document embedding.
Affected Systems and Versions
- Product: VBASE Pro-RT/ Server-RT (Web Remote)
- Version: 11.6.0.6
Exploitation Mechanism
The issue can be exploited through network-based attacks with high attack complexity.
Mitigation and Prevention
Actions to secure your system:
Immediate Steps to Take
- Update to VBASE v11.7.0.2 or newer
Long-Term Security Practices
- Regularly monitor vendor security advisories
- Maintain awareness of potential XML vulnerabilities
- Enforce strict input validation practices
- Utilize network or host-based intrusion detection/prevention systems
- Conduct regular security training for personnel
Patching and Updates
- VISAM suggests upgrading to VBASE v11.7.0.2 or higher
- Contact VISAM for further assistance.