CVE-2024-3149 in anything-llm
Summary
by MITRE • 06/06/2024
A Server-Side Request Forgery (SSRF) vulnerability exists in the upload link feature of mintplex-labs/anything-llm. This feature, intended for users with manager or admin roles, processes uploaded links through an internal Collector API using a headless browser. An attacker can exploit this by hosting a malicious website and using it to perform actions such as internal port scanning, accessing internal web applications not exposed externally, and interacting with the Collector API. This interaction can lead to unauthorized actions such as arbitrary file deletion and limited Local File Inclusion (LFI), including accessing NGINX access logs which may contain sensitive information.
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Analysis
by VulDB Data Team • 09/24/2024
The vulnerability described in CVE-2024-3149 represents a critical Server-Side Request Forgery flaw within the anything-llm application developed by mintplex-labs. This security weakness specifically targets the upload link functionality that is accessible to users with manager or admin privileges, creating an attack surface where malicious actors can leverage the system's legitimate internal processes for unauthorized activities. The vulnerability stems from insufficient validation of user-supplied URLs that are processed through an internal Collector API utilizing a headless browser environment, which inadvertently exposes the underlying infrastructure to external manipulation.
The technical implementation of this flaw occurs when the application accepts external URLs through its upload link feature without proper sanitization or access control enforcement. The headless browser component, designed to fetch and process web content internally, becomes a vector for attackers to redirect requests to internal resources that should remain isolated from external access. This architectural oversight allows threat actors to craft malicious URLs that, when processed by the internal Collector API, can traverse the network boundary and interact with internal services. The vulnerability is particularly concerning because it operates at the server level where the application has elevated privileges and access to internal systems that are typically protected by network segmentation.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to perform various malicious activities within the internal network environment. The most significant threats include internal port scanning operations that can map the internal network topology, access to internal web applications that are not exposed to the public internet, and direct interaction with the Collector API to execute unauthorized actions. The potential for arbitrary file deletion represents a severe compromise of system integrity, while the limited Local File Inclusion capability allows attackers to access sensitive files such as NGINX access logs that may contain authentication tokens, session information, or other confidential data. This vulnerability effectively undermines the application's security boundaries and provides attackers with a foothold to escalate their access within the internal infrastructure.
Mitigation strategies for CVE-2024-3149 should focus on implementing comprehensive input validation and access control measures for the upload link functionality. Organizations must enforce strict URL validation to prevent redirection to internal network resources, implement network segmentation to isolate the Collector API from direct external access, and establish proper authentication and authorization controls for the upload feature. The solution should include filtering mechanisms that block access to internal IP ranges, localhost addresses, and private network segments while maintaining the legitimate functionality for external URL processing. Additionally, implementing proper logging and monitoring of the upload link feature can help detect anomalous activities and potential exploitation attempts, aligning with security best practices outlined in the CWE-918 category for Server-Side Request Forgery vulnerabilities. This remediation approach addresses the fundamental architectural flaw while maintaining the intended functionality of the application's content processing capabilities.