CVE-2019-11030 : What You Need to Know

Mirasys.VMS versions prior to V7.6.1 and 8.x before V8.3.2 are vulnerable to an insecure deserialization issue that can lead to the execution of arbitrary code with SYSTEM privileges.

Understanding CVE-2019-11030

This CVE describes a mishandling vulnerability in Mirasys.VMS that allows attackers to exploit the deserialization process to execute malicious code.

What is CVE-2019-11030?

The vulnerability arises from a flaw in the Mirasys.Common.Utils.Security.DataCrypt method within the Common.dll file in the AuditTrailService component of SMServer.exe. By manipulating the deserialization process, an attacker can run a gadget with elevated privileges.

The Impact of CVE-2019-11030

Exploiting this vulnerability enables an attacker to execute arbitrary code with SYSTEM-level permissions, potentially leading to complete system compromise.

Technical Details of CVE-2019-11030

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The issue stems from insecure deserialization triggered by the Mirasys.Common.Utils.Security.DataCrypt method, allowing for gadget execution with SYSTEM privileges.

Affected Systems and Versions

Mirasys.VMS versions prior to V7.6.1 and 8.x before V8.3.2

Exploitation Mechanism

The attacker must correctly encrypt an object to trigger the vulnerability
Hardcoded keys are accessible for encryption

Mitigation and Prevention

Protecting systems from CVE-2019-11030 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly
Monitor for any unauthorized system access or unusual activities

Long-Term Security Practices

Implement secure coding practices to prevent deserialization vulnerabilities
Conduct regular security assessments and audits to identify and address potential weaknesses

Patching and Updates

Update Mirasys.VMS to versions V7.6.1 or V8.3.2 to mitigate the vulnerability