CVE-2022-26239 in Remisol Advance
Summary
by MITRE • 10/06/2022
The default privileges for the running service Normand License Manager in Beckman Coulter Remisol Advance v2.0.12.1 and prior allows unprivileged users to overwrite and manipulate executables and libraries. This allows attackers to access sensitive data.
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Analysis
by VulDB Data Team • 05/08/2026
The vulnerability identified as CVE-2022-26239 represents a critical privilege escalation flaw within the Beckman Coulter Remisol Advance v2.0.12.1 and earlier versions. This issue stems from improper default permissions assigned to the Normand License Manager service component, which operates with elevated privileges during system execution. The flaw creates a dangerous situation where standard user accounts can manipulate critical system files that should normally be protected from unauthorized modification. The vulnerability falls under the category of improper privilege management and weak access controls, which are commonly categorized as CWE-276. The affected service runs with elevated permissions that exceed what is necessary for its legitimate operations, creating an attack surface that adversaries can exploit to gain unauthorized access to sensitive system resources.
The technical implementation of this vulnerability involves the Normand License Manager service maintaining default file permissions that are overly permissive for a service operating at the system level. When the service executes with elevated privileges, it creates files and directories that allow unprivileged users to overwrite executable binaries and shared libraries. This occurs because the service fails to properly implement the principle of least privilege, a fundamental security concept that requires systems to operate with minimal necessary permissions. The flaw specifically impacts the service's handling of file creation and modification operations, where it does not adequately validate user permissions before allowing write operations to critical system paths. This type of vulnerability is particularly dangerous because it allows attackers to modify core system components without requiring administrative credentials or elevated access rights.
The operational impact of CVE-2022-26239 extends beyond simple privilege escalation to encompass potential data compromise and system integrity violations. Attackers who exploit this vulnerability can manipulate the license manager service to execute malicious code, potentially leading to complete system compromise. The ability to overwrite executables and libraries provides attackers with persistent access mechanisms that can survive system reboots and normal operational procedures. This vulnerability directly relates to the ATT&CK technique T1068, which covers privilege escalation through local exploitation, and T1566, which involves social engineering and manipulation of system components. The compromised system may experience unauthorized data access, modification, or exfiltration, particularly affecting the sensitive information managed by the Remisol Advance system. Organizations using this software may face regulatory compliance issues and potential data breaches if this vulnerability remains unaddressed.
Mitigation strategies for CVE-2022-26239 should focus on immediate privilege restriction and access control improvements. System administrators should implement proper file permission controls to ensure that the Normand License Manager service operates with the minimum necessary privileges required for its legitimate functions. This includes reviewing and adjusting default service permissions, implementing proper file system access controls, and ensuring that service accounts do not possess unnecessary write permissions to system directories. Organizations should also consider implementing additional security controls such as application whitelisting, monitoring for unauthorized file modifications, and regular security assessments of service configurations. The vulnerability highlights the importance of adhering to security best practices including the principle of least privilege and proper service hardening. Additionally, deploying intrusion detection systems that can monitor for suspicious file modification activities and implementing regular security updates to address known vulnerabilities should be prioritized. The remediation process should include comprehensive testing to ensure that privilege restrictions do not negatively impact legitimate service functionality while effectively preventing unauthorized modifications to critical system components.