CVE-2022-31374 in SolarView Compact
Summary
by MITRE • 06/21/2022
An arbitrary file upload vulnerability /images/background/1.php in of SolarView Compact 6.0 allows attackers to execute arbitrary code via a crafted php file.
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Analysis
by VulDB Data Team • 06/21/2022
The vulnerability CVE-2022-31374 represents a critical arbitrary file upload flaw within SolarView Compact 6.0 software, specifically located in the /images/background/ directory. This vulnerability stems from insufficient input validation and access control mechanisms that permit unauthorized users to upload malicious PHP files without proper authorization. The flaw allows attackers to bypass security restrictions and place executable code within the web application's file system, creating a persistent backdoor for malicious activities.
This arbitrary file upload vulnerability directly maps to CWE-434, which describes the improper restriction of uploads to a restricted directory, and falls under the broader category of CWE-22, representing improper limitation of a pathname to a restricted directory. The technical implementation of this flaw demonstrates a failure in the application's file validation processes, where the system does not adequately verify file extensions, content types, or file attributes before accepting uploads. Attackers can exploit this by crafting malicious PHP files with extensions that bypass typical security checks, such as .php, .phtml, or even .jpg with embedded PHP code.
The operational impact of CVE-2022-31374 is severe and multifaceted, as it enables remote code execution capabilities that can lead to complete system compromise. Once an attacker successfully uploads a malicious PHP file, they can execute arbitrary commands on the target server, potentially gaining full administrative control over the SolarView Compact 6.0 application and underlying infrastructure. This vulnerability can be leveraged for data exfiltration, lateral movement within network environments, and establishment of persistent access points. The attack surface expands significantly as the compromised system can serve as a launchpad for further attacks against adjacent systems.
The threat landscape surrounding this vulnerability aligns with ATT&CK technique T1505.003, which covers "Server Software Component: Web Shell," and T1078.004, representing "Valid Accounts: Cloud Accounts," as attackers can utilize compromised systems to maintain persistent access. Organizations running SolarView Compact 6.0 are particularly vulnerable to exploitation through automated scanning tools that specifically target known vulnerable applications and their file upload endpoints. The vulnerability's exploitability is heightened by the fact that it requires minimal privileges to execute, making it attractive to both automated attack tools and skilled threat actors.
Mitigation strategies for CVE-2022-31374 should include immediate implementation of file type validation mechanisms that reject executable file uploads, proper input sanitization, and enforcement of strict access controls on upload directories. Organizations should deploy web application firewalls to monitor and block suspicious file upload attempts, implement proper file extension filtering, and ensure that uploaded files are stored outside the web root directory. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other application components, while maintaining up-to-date patches and security configurations to prevent exploitation of known vulnerabilities.