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The "NagVis" component within Checkmk is vulnerable to remote code execution. An authenticated attacker with administrative level privileges is able to upload a malicious PHP file and modify specific settings to execute the contents of the file as PHP.

CVE-2024-13723 is a vulnerability classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) affecting the NagVis component within Checkmk, a popular IT monitoring solution. The flaw allows an attacker with authenticated administrative privileges to upload malicious PHP files without proper validation or restriction. By modifying specific settings within NagVis, the attacker can execute the uploaded PHP code remotely, resulting in remote code execution (RCE). This vulnerability affects NagVis version 1.9.40 and Checkmk version 2.3.0p2. The CVSS v3.1 base score is 7.2, indicating high severity, with attack vector being network-based, low attack complexity, requiring high privileges, no user interaction, and impacting confidentiality, integrity, and availability. The vulnerability is particularly dangerous because it allows an attacker to execute arbitrary code on the server hosting NagVis, potentially leading to full system compromise, data theft, or disruption of monitoring services. Although no exploits have been observed in the wild yet, the presence of administrative access prerequisites limits exploitation to insiders or attackers who have already breached initial defenses. The vulnerability stems from insufficient validation of uploaded files, allowing dangerous file types like PHP scripts to be uploaded and executed. This is a critical concern for organizations relying on Checkmk NagVis for monitoring, as it could undermine the integrity of their monitoring infrastructure and broader IT environment.

Detailed information about CVE-2024-13723: CWE-434 Unrestricted Upload of File with Dangerous Type in Checkmk NagVis affecting Checkmk NagVis. Get real-time upd

CVE-2024-13723: CWE-434 Unrestricted Upload of File with Dangerous Type in Checkmk NagVis - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-13723: CWE-434 Unrestricted Upload of File with Dangerous Type in Checkmk NagVis

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