CVE-2022-44015 in Lieferantenmanager
Summary
by MITRE • 12/25/2022
An issue was discovered in Simmeth Lieferantenmanager before 5.6. An attacker can inject raw SQL queries. By activating MSSQL features, the attacker is able to execute arbitrary commands on the MSSQL server via the xp_cmdshell extended procedure.
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Analysis
by VulDB Data Team • 01/24/2023
The vulnerability identified as CVE-2022-44015 affects Simmeth Lieferantenmanager versions prior to 5.6, representing a critical SQL injection flaw that enables remote code execution on Microsoft SQL Server instances. This vulnerability stems from insufficient input validation and sanitization within the application's database interaction mechanisms, allowing malicious actors to inject raw SQL commands directly into the application's query processing pipeline. The flaw specifically manifests when the application's MSSQL features are activated, creating a dangerous attack surface that bridges the application layer directly to the database server's command execution capabilities.
The technical exploitation of this vulnerability leverages the xp_cmdshell extended stored procedure within Microsoft SQL Server, which serves as a direct interface for executing operating system commands from within the database context. When an attacker successfully injects SQL commands through the vulnerable application, they can activate xp_cmdshell to execute arbitrary commands on the underlying MSSQL server, effectively granting them system-level privileges on the database server. This represents a severe privilege escalation vector that transforms a web application vulnerability into full system compromise, as the database server typically operates with elevated privileges that can extend to the host operating system.
The operational impact of CVE-2022-44015 extends far beyond simple data theft or modification, as it enables attackers to establish persistent access to the compromised system. Once exploitation occurs, threat actors can deploy backdoors, escalate privileges further, pivot to other network systems, and potentially exfiltrate sensitive data from the entire database infrastructure. The vulnerability's severity aligns with CWE-89, which specifically addresses SQL injection flaws, and demonstrates how insufficient input validation can create pathways for command execution attacks. From an adversarial perspective, this vulnerability maps directly to ATT&CK technique T1071.004 for application layer protocol usage and T1059.001 for command and scripting interpreter, making it a prime target for attackers seeking persistent access and lateral movement within network environments.
Organizations utilizing affected versions of Simmeth Lieferantenmanager must implement immediate mitigations including applying the vendor-provided patch to version 5.6 or higher, disabling xp_cmdshell extended procedures if not required for legitimate business operations, and implementing network segmentation to limit database server access. Additional defensive measures should include input validation at the application level, parameterized queries, and comprehensive monitoring of database activities for suspicious command execution patterns. The vulnerability also underscores the importance of principle of least privilege enforcement, ensuring that database accounts used by applications have minimal required permissions and that extended procedures like xp_cmdshell are disabled by default to prevent unauthorized command execution.