CVE-2019-0330 in Diagnostic Agent
Summary
by MITRE
The OS Command Plugin in the transaction GPA_ADMIN and the OSCommand Console of SAP Diagnostic Agent (LM-Service), version 7.2, allow an attacker to inject code that can be executed by the application. An attacker could thereby control the behavior of the application.
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Analysis
by VulDB Data Team • 10/24/2023
The vulnerability identified as CVE-2019-0330 affects SAP Diagnostic Agent version 7.2, specifically within the transaction GPA_ADMIN and OSCommand Console components of the LM-Service module. This represents a critical command injection flaw that enables remote attackers to execute arbitrary operating system commands through the diagnostic agent interface. The vulnerability stems from insufficient input validation and sanitization within the command execution pathways, allowing malicious actors to inject OS-level commands that are subsequently processed by the application. The affected components operate with elevated privileges, making the potential impact significantly more severe than typical command injection vulnerabilities.
The technical nature of this vulnerability aligns with CWE-78, which describes improper neutralization of special elements used in operating system commands, and CWE-88, which addresses improper neutralization of argument separators in a command. Attackers can exploit this weakness by crafting malicious input that bypasses normal input validation mechanisms, enabling them to inject arbitrary commands that execute with the privileges of the SAP Diagnostic Agent service. The vulnerability exists in the OS Command Plugin where user-supplied data is directly incorporated into system command invocations without proper sanitization or escaping mechanisms. This allows attackers to manipulate the execution flow of the diagnostic agent to perform unauthorized operations including but not limited to data exfiltration, system reconnaissance, privilege escalation, and potential lateral movement within the network infrastructure.
The operational impact of CVE-2019-0330 extends beyond simple command execution as it provides attackers with a persistent foothold within SAP environments. The SAP Diagnostic Agent typically runs with high-privilege accounts, meaning successful exploitation can lead to complete system compromise and unauthorized access to sensitive enterprise data. The vulnerability affects organizations using SAP systems where the diagnostic agent is deployed, potentially enabling attackers to gain insights into system configurations, access database information, and manipulate system behavior through the command injection channel. This threat is particularly concerning in enterprise environments where SAP systems are critical business infrastructure components that often contain sensitive financial, operational, and personal data. The vulnerability can be exploited remotely without requiring authentication to the SAP system itself, making it especially dangerous for organizations with exposed diagnostic interfaces.
Mitigation strategies for CVE-2019-0330 should prioritize immediate patch application from SAP as the primary remediation measure. Organizations should also implement network segmentation to restrict access to the SAP Diagnostic Agent interfaces, particularly the GPA_ADMIN transaction and OSCommand Console components. Access controls must be strengthened through role-based access controls and least privilege principles to limit who can interact with these diagnostic functions. Input validation should be enhanced at all interfaces to prevent command injection attacks, with proper parameter sanitization and escaping mechanisms implemented. Network monitoring and intrusion detection systems should be configured to detect suspicious command execution patterns and unusual network traffic originating from SAP diagnostic components. Additionally, regular security assessments should be conducted to identify other potential command injection vulnerabilities within SAP environments, following ATT&CK framework guidance for defensive measures against command and scripting interpreter techniques. Organizations should also consider implementing application firewalls and web application firewalls to filter malicious inputs before they reach the vulnerable components.