CVE-2022-29376 in Xampp
Summary
by MITRE • 05/24/2022
Xampp for Windows v8.1.4 and below was discovered to contain insecure permissions for its install directory, allowing attackers to execute arbitrary code via overwriting binaries located in the directory.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/15/2025
The vulnerability identified as CVE-2022-29376 affects XAMPP for Windows versions 8.1.4 and earlier, presenting a critical security flaw related to improper access controls within the installation directory structure. This issue stems from the application's failure to implement proper file system permissions that would prevent unauthorized modification of critical components. The vulnerability exists in the default installation configuration where the install directory lacks adequate access restrictions, creating an environment where malicious actors can exploit the weak permission model to gain elevated privileges.
The technical flaw manifests through the insecure default permissions assigned to XAMPP's installation directory on Windows systems. When XAMPP is installed, the directory structure and its constituent files are not properly secured against modification by unauthorized users or processes. This misconfiguration allows attackers with basic system access to overwrite or replace executable binaries within the installation folder, effectively enabling privilege escalation and arbitrary code execution capabilities. The vulnerability operates under the principle of least privilege violation, where system components should not be writable by users without appropriate authorization.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a pathway to establish persistent access within compromised systems. Once an attacker successfully overwrites binaries in the XAMPP installation directory, they can execute malicious payloads with the privileges of the XAMPP service account or the user who owns the installation. This creates a significant risk for web server environments where XAMPP is commonly deployed, as the compromised system can be used to host additional malicious content, establish command and control channels, or serve as a foothold for further lateral movement within network infrastructures. The vulnerability directly aligns with attack patterns documented in the MITRE ATT&CK framework under privilege escalation and persistence tactics.
Security professionals should consider this vulnerability in the context of CWE-276, which describes inadequate permissions for critical system resources, and CWE-732, which addresses incorrect permissions for critical resources. The vulnerability represents a classic case of insufficient access control mechanisms that should be implemented during software installation processes. Organizations using XAMPP should immediately implement mitigation strategies including manual permission adjustments on installation directories, deployment of automated permission auditing tools, and consideration of alternative web server solutions with more robust default security configurations. Additionally, system administrators should conduct comprehensive security assessments of all installed software to identify similar permission misconfigurations that could create comparable attack vectors within their environments.