CVE-2022-25402 in HMS
Summary
by MITRE • 02/24/2022
An incorrect access control issue in HMS v1.0 allows unauthenticated attackers to read and modify all PHP files.
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Analysis
by VulDB Data Team • 02/26/2022
The vulnerability identified as CVE-2022-25402 represents a critical access control flaw within HMS v1.0 software that fundamentally compromises the system's security posture. This issue manifests as an improper authorization mechanism that fails to properly validate user credentials or session states before granting access to sensitive system resources. The vulnerability exists within the application's authentication framework, where the system does not adequately verify whether incoming requests originate from legitimate authenticated users or unauthorized external parties. This weakness creates a pathway for malicious actors to bypass normal access controls and gain unrestricted privileges within the affected environment.
The technical exploitation of this vulnerability occurs through a flaw in the application's input validation and access control implementation. Attackers can leverage this weakness to perform unauthorized operations against PHP files without providing any authentication credentials or tokens. The vulnerability essentially removes the authentication barrier that should normally prevent unauthorized access to system files, allowing attackers to both read and modify PHP source code files directly. This type of flaw typically stems from inadequate implementation of access control lists or permission checking mechanisms, where the system defaults to granting full access rather than restricting access based on proper authentication and authorization checks.
The operational impact of CVE-2022-25402 is severe and far-reaching, as it provides attackers with complete control over the application's PHP files. This level of access enables attackers to modify critical system components, inject malicious code, alter application logic, and potentially establish persistent backdoors within the system. The ability to read PHP files exposes sensitive configuration data, database credentials, and application source code that could be used for further exploitation or lateral movement within the network. Additionally, the modification capability allows attackers to deploy web shells, alter security controls, or introduce functionality that can be leveraged for extended unauthorized access.
This vulnerability aligns with CWE-284, which specifically addresses improper access control issues, and demonstrates characteristics consistent with the ATT&CK technique T1078.004 for valid accounts and T1566.001 for spearphishing via email. The flaw represents a classic case of privilege escalation through improper authorization checks, where the system fails to properly enforce access restrictions. Organizations should implement immediate mitigations including patching the software to address the access control implementation, reviewing and strengthening authentication mechanisms, and conducting comprehensive security assessments of similar systems. Network segmentation and monitoring should be enhanced to detect unauthorized file access attempts, while regular security audits should verify proper access control implementations across all application components. The vulnerability underscores the critical importance of proper authentication and authorization controls in preventing unauthorized system access and maintaining overall security posture.