CVE-2022-4096 in appsmith
Summary
by MITRE • 11/21/2022
Server-Side Request Forgery (SSRF) in GitHub repository appsmithorg/appsmith prior to 1.8.2.
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Analysis
by VulDB Data Team • 12/21/2022
The vulnerability identified as CVE-2022-4096 represents a critical server-side request forgery flaw discovered in the appsmithorg/appsmith repository prior to version 1.8.2. This vulnerability allows attackers to manipulate the application's server to make unintended requests to internal or external systems, potentially leading to unauthorized access to sensitive resources within the organization's network infrastructure. The flaw exists within the application's handling of user-supplied input that is processed without adequate validation or sanitization, creating an avenue for malicious actors to exploit the system's trust relationships.
The technical implementation of this vulnerability stems from insufficient input validation mechanisms within the application's request processing pipeline. Attackers can craft malicious requests that bypass normal access controls and force the server to initiate connections to arbitrary destinations. This flaw operates at the application layer and leverages the server's ability to make outbound network connections, potentially exposing internal services, databases, or other network resources that would normally be protected by firewalls or network segmentation. The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery issues where applications fail to properly validate or restrict the destinations of HTTP requests.
The operational impact of this vulnerability extends beyond simple data exfiltration, as it can enable attackers to perform reconnaissance activities against internal network components, access restricted APIs, or even escalate privileges within the application environment. Organizations using affected versions of the appsmith application face significant risks including unauthorized data access, potential system compromise, and exposure of sensitive business information. The vulnerability is particularly dangerous because it can be exploited without requiring authentication to the application itself, making it accessible to any attacker who can submit requests to the vulnerable system.
Mitigation strategies should focus on implementing robust input validation and sanitization mechanisms throughout the application's request handling process. Organizations should immediately upgrade to version 1.8.2 or later, which contains the necessary patches to address this vulnerability. Additionally, network-level controls such as firewall rules and proxy configurations should be implemented to restrict outbound connections from the application server, limiting the potential damage from successful exploitation attempts. The implementation of web application firewalls and request filtering mechanisms can provide additional layers of protection against similar vulnerabilities. Security teams should also conduct comprehensive assessments of their application environments to identify and remediate any other potential SSRF vulnerabilities within their infrastructure, as these flaws often occur in similar patterns across different software components and can be systematically addressed through proper security development practices and adherence to security frameworks such as those defined in the ATT&CK framework for application security threats.