CVE-2023-27296
📋 TL;DR
This vulnerability allows authenticated users of Apache InLong to execute arbitrary code through deserialization of untrusted data. It affects Apache InLong versions 1.1.0 through 1.5.0, potentially leading to remote code execution on affected systems.
💻 Affected Systems
- Apache InLong
📦 What is this software?
Inlong by Apache
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with remote code execution leading to data theft, lateral movement, and persistent backdoor installation.
Likely Case
Authenticated attackers gaining shell access to the InLong server, potentially accessing sensitive data and disrupting services.
If Mitigated
Limited impact due to network segmentation and strong authentication controls restricting access to authenticated users only.
🎯 Exploit Status
Exploitation requires authenticated access but uses well-known deserialization techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest version or cherry-pick PR #7422
Vendor Advisory: https://lists.apache.org/thread/xbvtjw9bwzgbo9fp1by8o3p49nf59xzt
Restart Required: Yes
Instructions:
1. Upgrade to latest Apache InLong version. 2. Alternatively, apply the fix from PR #7422. 3. Restart all InLong services.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to InLong services to trusted IPs only
iptables -A INPUT -p tcp --dport [INLONG_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [INLONG_PORT] -j DROP
Authentication Hardening
allImplement strong authentication controls and monitor for suspicious authenticated sessions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate InLong instances
- Deploy application-level firewalls to monitor and block suspicious deserialization attempts
🔍 How to Verify
Check if Vulnerable:
Check InLong version: if between 1.1.0 and 1.5.0 inclusive, system is vulnerable.Check Version:
Check InLong configuration files or application logs for version informationVerify Fix Applied:
Verify version is above 1.5.0 or confirm PR #7422 has been applied to the codebase.📡 Detection & Monitoring
Log Indicators:
- Unusual deserialization errors
- Suspicious JDBC connection attempts
- Unexpected process execution from InLong service
Network Indicators:
- Unusual outbound connections from InLong servers
- Suspicious payloads in HTTP requests to InLong endpoints
SIEM Query:
source="inlong.log" AND ("deserialization" OR "jdbc" OR "ClassNotFoundException")