CVE-2024-36448 Overview
CVE-2024-36448 is a Server-Side Request Forgery (SSRF) vulnerability in Apache IoTDB Workbench, the web-based management interface for the Apache IoTDB time-series database. The flaw affects all releases from version 0.13.0 onward. Apache has retired the IoTDB Workbench project and will not release a fix. Attackers can abuse the SSRF flaw to coerce the server into issuing arbitrary HTTP requests to internal services, cloud metadata endpoints, or other systems reachable from the Workbench host. The vulnerability is classified under CWE-918 and exploitable over the network without authentication or user interaction.
Critical Impact
An unauthenticated remote attacker can force Apache IoTDB Workbench to send crafted HTTP requests to internal network targets, potentially exposing internal services and cloud metadata.
Affected Products
- Apache IoTDB Workbench 0.13.0 and later
- All subsequent IoTDB Workbench releases (project retired, no patched version available)
- Deployments exposing the Workbench interface to untrusted networks
Discovery Timeline
- 2024-08-05 - CVE-2024-36448 published to NVD and disclosed via the Apache Mailing List Thread and Openwall OSS Security Update
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-36448
Vulnerability Analysis
Apache IoTDB Workbench is a web management console for Apache IoTDB, an open-source time-series database used in industrial IoT deployments. The Workbench accepts user-supplied URLs or hostnames and dispatches server-side HTTP requests without validating the destination. An attacker can supply URLs pointing to loopback interfaces, internal RFC1918 ranges, or cloud instance metadata services such as 169.254.169.254. The server then issues the request from its trusted network position. Because the project is retired, Apache has explicitly stated that no fix will be released and recommends migration to an alternative or strict network-level access restriction.
Root Cause
The root cause is missing validation and allowlisting of outbound request targets in URL-handling logic within Workbench, classified as [CWE-918] Server-Side Request Forgery. The application trusts user-controlled input that determines the destination of server-initiated HTTP traffic. Without destination filtering, schema restrictions, or DNS resolution checks, internal endpoints become reachable through the Workbench proxy behavior.
Attack Vector
Exploitation requires only network access to the Workbench HTTP interface. An unauthenticated attacker submits a crafted request containing a URL parameter referencing an internal target. The Workbench server resolves the host and issues the request, returning response data or side effects to the attacker. Common abuse scenarios include enumerating internal HTTP services, retrieving AWS/Azure/GCP instance metadata credentials, scanning internal ports, and reaching admin interfaces bound to localhost. No verified public exploit code or proof-of-concept is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Refer to the Apache Mailing List Thread for the official advisory.
Detection Methods for CVE-2024-36448
Indicators of Compromise
- Outbound HTTP connections from the IoTDB Workbench host to 169.254.169.254, 127.0.0.1, or RFC1918 ranges that do not match expected operational traffic
- Unusual DNS lookups originating from the Workbench process for internal hostnames or cloud metadata domains
- Anomalous Workbench access log entries containing URL parameters with http://, file://, or gopher:// schemes pointing to internal addresses
Detection Strategies
- Inspect web server and reverse proxy logs for Workbench requests containing URL-like parameters targeting internal IP ranges or metadata IPs
- Monitor egress firewall logs for connections initiated by the Workbench service to destinations outside its normal API surface
- Apply network IDS signatures for SSRF patterns targeting cloud metadata endpoints from application servers
Monitoring Recommendations
- Continuously baseline outbound network behavior of the Workbench host and alert on deviations
- Forward Workbench access logs and host network telemetry to a centralized SIEM or data lake for correlation
- Alert on any connection attempt from the Workbench host to link-local addresses or unexpected internal services
How to Mitigate CVE-2024-36448
Immediate Actions Required
- Restrict network access to Apache IoTDB Workbench so that only trusted administrators can reach the management interface
- Place the Workbench host behind a firewall or VPN and block all untrusted inbound traffic to its HTTP port
- Plan migration away from Apache IoTDB Workbench, as the project is retired and will not receive security fixes
- Block outbound traffic from the Workbench host to cloud metadata endpoints and unrelated internal services
Patch Information
No patch will be released. Apache has confirmed in the Apache Mailing List Thread that IoTDB Workbench is retired and recommends that users find an alternative or restrict access to the instance to trusted users only.
Workarounds
- Decommission Apache IoTDB Workbench and manage IoTDB through supported tooling or direct database clients
- Enforce strict ingress access control lists limiting Workbench connectivity to a small set of administrator IP addresses
- Apply egress filtering to deny Workbench-initiated traffic to 169.254.169.254 and other sensitive internal destinations
- On cloud deployments, enforce IMDSv2 to mitigate exposure of instance metadata credentials via SSRF
# Example iptables egress restrictions for the Workbench host
# Block access to cloud instance metadata service
iptables -A OUTPUT -d 169.254.169.254 -j DROP
# Restrict inbound Workbench access to trusted admin subnet only
iptables -A INPUT -p tcp --dport 8080 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
