CVE-2023-32727 in Zabbix
Summary
by MITRE • 12/18/2023
An attacker who has the privilege to configure Zabbix items can use function icmpping() with additional malicious command inside it to execute arbitrary code on the current Zabbix server.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 04/21/2025
The vulnerability identified as CVE-2023-32727 represents a critical remote code execution flaw within the Zabbix monitoring platform that arises from improper input validation in the icmpping() function. This issue specifically affects Zabbix server components that process item configurations, creating a pathway for authenticated attackers to escalate privileges and execute arbitrary commands on the underlying server system. The vulnerability stems from insufficient sanitization of user-supplied parameters passed to the icmpping() function, which is commonly used for network connectivity monitoring and ping operations. When an attacker configures a Zabbix item using this function with maliciously crafted parameters, the system fails to properly validate or escape the input before processing, leading to command injection vulnerabilities that can be exploited to gain full control over the Zabbix server.
The technical exploitation of this vulnerability occurs through the manipulation of the icmpping() function's parameters, where an attacker can inject additional commands that get executed within the context of the Zabbix server process. This type of vulnerability falls under the CWE-77 attack pattern category, specifically representing command injection flaws that occur when user-supplied data is directly incorporated into system commands without proper validation or sanitization. The attack vector requires an authenticated user with sufficient privileges to configure Zabbix items, which typically means that the vulnerability is not exploitable from outside the network perimeter but can be leveraged by malicious insiders or compromised accounts. The severity of this flaw is exacerbated by the fact that Zabbix servers often run with elevated privileges to perform network monitoring tasks, making successful exploitation potentially catastrophic for the entire monitoring infrastructure.
From an operational perspective, this vulnerability poses significant risks to organizations that rely on Zabbix for critical infrastructure monitoring, as it allows attackers to execute arbitrary code with the privileges of the Zabbix server process. The impact extends beyond simple code execution to include potential data exfiltration, system compromise, and disruption of monitoring services that could mask further attacks within the network. Attackers could leverage this vulnerability to establish persistent backdoors, modify monitoring data to hide malicious activities, or use the compromised server as a pivot point to attack other systems within the network. The vulnerability also aligns with ATT&CK technique T1059.001 for command and scripting interpreter, as it enables adversaries to execute commands through the Zabbix server's command processing capabilities. Organizations using Zabbix in production environments may face severe consequences including compliance violations, operational downtime, and potential data breaches if this vulnerability remains unpatched.
The recommended mitigations for CVE-2023-32727 include immediate application of vendor-provided security patches and updates to the Zabbix server software to address the input validation flaws in the icmpping() function. Organizations should implement strict access controls and privilege separation to limit who can configure Zabbix items, ensuring that only trusted administrators have the ability to modify monitoring configurations. Network segmentation and monitoring of Zabbix server communications can help detect anomalous command execution patterns that might indicate exploitation attempts. Additionally, implementing input validation at multiple layers and conducting regular security assessments of monitoring infrastructure can help identify and remediate similar vulnerabilities. The vulnerability also highlights the importance of principle of least privilege in monitoring systems, where Zabbix servers should run with minimal required permissions to reduce the potential impact of successful exploitation. Regular security audits and vulnerability assessments of monitoring platforms are essential to maintain operational security posture and prevent similar issues from compromising critical infrastructure monitoring capabilities.