CVE-2023-1877 in microweber
Summary
by MITRE • 04/05/2023
Command Injection in GitHub repository microweber/microweber prior to 1.3.3.
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Analysis
by VulDB Data Team • 07/06/2025
The vulnerability identified as CVE-2023-1877 represents a critical command injection flaw within the microweber content management system repository. This security weakness affects versions prior to 1.3.3 and stems from inadequate input validation mechanisms that permit malicious commands to be executed within the system's command processing environment. The vulnerability manifests when user-supplied data is directly incorporated into system commands without proper sanitization or encoding, creating an avenue for attackers to execute arbitrary code on the affected server. The flaw exists in the repository's handling of user inputs that are subsequently processed through shell execution functions, allowing for unauthorized command execution with the privileges of the web application.
Technical exploitation of this vulnerability occurs through the manipulation of input parameters that are subsequently passed to system commands. Attackers can craft malicious payloads that, when processed by the vulnerable application, result in unintended command execution on the underlying operating system. This type of vulnerability falls under the Common Weakness Enumeration category CWE-77, which specifically addresses command injection flaws in software applications. The attack vector typically involves sending specially crafted requests that contain shell metacharacters or command separators, enabling the attacker to bypass normal input validation and execute arbitrary system commands. The vulnerability's severity is amplified by the fact that it operates at the system level, potentially allowing full compromise of the hosting environment.
The operational impact of CVE-2023-1877 extends beyond simple data theft or service disruption, as successful exploitation can lead to complete system compromise and persistent access. An attacker who successfully exploits this vulnerability can gain unauthorized access to the server's file system, potentially escalating privileges to execute commands with administrative rights. This capability allows for data exfiltration, system modification, and the establishment of backdoors for continued access. The vulnerability also poses risks to network infrastructure as attackers can use compromised systems as launch points for lateral movement within the network. According to ATT&CK framework technique T1059.001, adversaries can leverage command and scripting interpreters to execute malicious commands, which aligns directly with the exploitation methods available through this vulnerability.
Mitigation strategies for CVE-2023-1877 require immediate implementation of the vendor-released patch version 1.3.3, which addresses the input validation deficiencies in the affected codebase. Organizations should implement comprehensive input sanitization measures that validate and sanitize all user-supplied data before processing, particularly when system commands are involved. The recommended approach includes employing parameterized command execution methods, input encoding, and strict validation of all external inputs. Additionally, implementing proper access controls and privilege separation can limit the damage potential from successful exploitation attempts. Network monitoring and intrusion detection systems should be configured to detect unusual command execution patterns that may indicate exploitation attempts. Security teams should also conduct thorough code reviews focusing on command execution functions and input handling mechanisms to identify similar vulnerabilities within the application codebase. The vulnerability's classification as a high-severity issue necessitates immediate remediation efforts and continuous monitoring for potential exploitation attempts.