CVE-2025-1712 in Checkmk
Summary
by MITRE • 05/21/2025
Argument injection in special agent configuration in Checkmk <2.4.0p1, <2.3.0p32, <2.2.0p42 and 2.1.0 allows authenticated attackers to write arbitrary files
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Analysis
by VulDB Data Team • 08/23/2025
The vulnerability identified as CVE-2025-1712 represents a critical argument injection flaw within the special agent configuration functionality of Checkmk monitoring software. This issue affects multiple versions including those below 2.4.0p1, 2.3.0p32, 2.2.0p42, and 2.1.0, creating a significant security risk for organizations relying on this monitoring platform. The flaw stems from insufficient input validation and sanitization mechanisms within the special agent configuration processing pipeline, allowing authenticated attackers to manipulate argument parsing and execution flows.
The technical implementation of this vulnerability manifests through improper handling of user-supplied parameters during special agent configuration operations. When an authenticated attacker submits malicious input through the configuration interface, the system fails to adequately validate or escape special characters that could alter the intended command execution flow. This weakness directly maps to CWE-77, which describes improper neutralization of special elements used in command execution contexts. The vulnerability enables attackers to inject arbitrary arguments that can be interpreted by the underlying system commands, potentially leading to unauthorized file creation and manipulation.
The operational impact of CVE-2025-1712 extends beyond simple file creation capabilities, as it provides attackers with a pathway to establish persistent access and potentially escalate privileges within the monitored environment. Attackers can leverage this vulnerability to write files to arbitrary locations on the system, potentially creating backdoors, modifying existing configuration files, or injecting malicious code into the monitoring infrastructure. This capability fundamentally undermines the integrity and security of the Checkmk monitoring system, as it allows adversaries to manipulate the very tools designed to detect and prevent security incidents.
From an adversary perspective, this vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter, specifically focusing on the execution of commands through the system shell. The attack chain typically begins with authentication to gain access to the Checkmk web interface, followed by exploitation of the argument injection flaw to execute arbitrary commands with the privileges of the Checkmk service account. Organizations should consider this vulnerability as part of a broader attack pattern where initial access is leveraged to establish persistence and escalate privileges within the monitored infrastructure.
The recommended mitigation strategy involves immediate deployment of patched versions of Checkmk software, specifically versions 2.4.0p1, 2.3.0p32, 2.2.0p42, or 2.1.0p1, which contain the necessary input validation and sanitization fixes. Organizations should also implement network segmentation to limit access to the Checkmk monitoring interface, enforce strict authentication controls, and monitor for suspicious configuration changes. Additionally, regular security assessments and input validation reviews should be conducted to prevent similar vulnerabilities in other components of the monitoring infrastructure. The vulnerability demonstrates the critical importance of proper input sanitization in security-critical applications and highlights the need for comprehensive security testing throughout the software development lifecycle.