CVE-2017-7290 in Xoops
Summary
by MITRE
SQL injection vulnerability in XOOPS 2.5.7.2 and other versions before 2.5.8.1 allows remote authenticated administrators to execute arbitrary SQL commands via the url parameter to findusers.php. An example attack uses "into outfile" to create a backdoor program.
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Analysis
by VulDB Data Team • 08/24/2020
The CVE-2017-7290 vulnerability represents a critical SQL injection flaw within the XOOPS content management system affecting versions prior to 2.5.8.1. This vulnerability specifically targets the findusers.php script and exploits a weakness in how the application processes the url parameter, allowing authenticated administrators to escalate their privileges and execute arbitrary SQL commands. The flaw stems from insufficient input validation and improper parameter handling within the application's database interaction layer, creating a direct pathway for malicious SQL code execution. The vulnerability is particularly dangerous because it requires only authentication as an administrator, making it accessible to users who already possess legitimate administrative credentials.
The technical exploitation of this vulnerability follows a well-established SQL injection pattern where the malicious input is directly incorporated into SQL query construction without proper sanitization or parameterization. Attackers can leverage this flaw to manipulate database queries through the url parameter, potentially gaining unauthorized access to sensitive data or executing destructive operations. The described technique involving "into outfile" demonstrates the severity of the vulnerability, as it allows attackers to write files to the server filesystem, effectively creating persistent backdoor programs that can be used for continued unauthorized access. This approach aligns with common attack patterns documented in the ATT&CK framework under the T1078 technique for valid accounts and T1059 for command and scripting interpreter.
The operational impact of CVE-2017-7290 extends beyond immediate data compromise to encompass complete system takeover capabilities for authenticated administrators. Once exploited, attackers can manipulate user accounts, access confidential information, modify database content, and establish persistent access points through backdoor file creation. The vulnerability affects the core authentication and authorization mechanisms of XOOPS, undermining the security model that relies on proper access controls. Organizations using affected versions face significant risks including data breaches, service disruption, and potential regulatory compliance violations. The vulnerability also demonstrates the importance of proper input validation and the principle of least privilege in web application security.
Mitigation strategies for CVE-2017-7290 should prioritize immediate patching to version 2.5.8.1 or later, which implements proper input sanitization and parameterized query execution. Organizations should also implement network segmentation and access controls to limit administrator access to only necessary systems. The vulnerability aligns with CWE-89 which categorizes SQL injection as a critical weakness in software design. Security monitoring should include detection of unusual file creation patterns and database access anomalies. Additionally, implementing web application firewalls and input validation mechanisms can provide additional defense-in-depth layers. Regular security assessments and code reviews should focus on database interaction patterns to prevent similar vulnerabilities. The incident highlights the necessity of maintaining up-to-date software versions and implementing robust security practices throughout the application lifecycle.