CVE-2022-28997 in CSZCMS
Summary
by MITRE • 05/23/2022
CSZCMS v1.3.0 allows attackers to execute a Server-Side Request Forgery (SSRF) which can be leveraged to leak sensitive data via a local file inclusion at /admin/filemanager/connector/.
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Analysis
by VulDB Data Team • 05/29/2022
The vulnerability CVE-2022-28997 affects CSZCMS version 1.3.0 and represents a critical server-side request forgery flaw that enables remote attackers to bypass security controls and access internal resources. This vulnerability specifically exists within the file manager connector component located at /admin/filemanager/connector/ which serves as an entry point for malicious exploitation. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly restrict user-supplied data before processing requests to internal systems.
The technical implementation of this vulnerability allows attackers to manipulate the file manager connector to make unauthorized requests to internal services or local files that should normally be inaccessible from external networks. When an attacker crafts malicious requests through the vulnerable endpoint, the application fails to validate or sanitize the input parameters, enabling the exploitation of local file inclusion patterns that can lead to sensitive data exposure. This type of vulnerability falls under CWE-918 which specifically addresses server-side request forgery conditions where applications fail to properly validate and restrict external requests.
The operational impact of this vulnerability extends beyond simple data leakage as it provides attackers with the capability to enumerate internal network resources, access configuration files, database credentials, and other sensitive information stored locally on the server. Attackers can leverage this flaw to perform reconnaissance activities against internal systems, potentially leading to further compromise of the affected infrastructure. The vulnerability can be exploited to access system files, application logs, and potentially even execute arbitrary code if the application has insufficient access controls. This represents a significant risk to organizations using CSZCMS v1.3.0 as it allows attackers to bypass network segmentation controls and access resources that should remain protected within internal networks.
Mitigation strategies for CVE-2022-28997 should focus on implementing proper input validation and sanitization measures within the file manager connector component. Organizations should ensure that all user-supplied inputs are properly validated and restricted before being processed by the application. The implementation of a whitelist-based approach for file access controls and the removal of unnecessary file inclusion capabilities would significantly reduce the attack surface. Network segmentation and firewall rules should be implemented to restrict access to administrative endpoints and internal resources. Additionally, regular security updates and patches should be applied to ensure that known vulnerabilities are addressed promptly. This vulnerability aligns with ATT&CK technique T1071.004 which covers application layer protocol: DNS and T1566 which covers credential access through server-side request forgery attacks. Organizations should also consider implementing web application firewalls and monitoring for suspicious patterns of requests to administrative endpoints that may indicate exploitation attempts.