CVE-2022-31764
📋 TL;DR
This vulnerability allows authenticated attackers to execute arbitrary code on Apache ShardingSphere ElasticJob-UI servers by exploiting a flaw in H2 database JDBC URL parsing. It affects all ElasticJob-UI versions up to 3.0.1. Attackers must first obtain valid credentials to exploit this vulnerability.
💻 Affected Systems
- Apache ShardingSphere ElasticJob-UI
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attackers to execute arbitrary commands, steal sensitive data, deploy malware, or pivot to other systems in the network.
Likely Case
Attackers with stolen credentials gain remote code execution, potentially leading to data exfiltration, service disruption, or installation of backdoors.
If Mitigated
With strong authentication controls and network segmentation, impact is limited to the ElasticJob-UI service itself.
🎯 Exploit Status
Exploitation requires valid credentials and knowledge of constructing malicious H2 JDBC URLs. No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ElasticJob-UI 3.0.2
Vendor Advisory: https://lists.apache.org/thread/pg0k223m4hsnnzg4nh7lxvdxxgbkrlqb
Restart Required: No
Instructions:
1. Download ElasticJob-UI 3.0.2 from Apache ShardingSphere releases. 2. Replace existing ElasticJob-UI installation with the patched version. 3. Verify the update by checking the version in the UI or configuration files.
🔧 Temporary Workarounds
Disable Lite UI
allTemporarily disable the vulnerable Lite UI component if not required for operations.
Modify ElasticJob-UI configuration to disable Lite UI or restrict access to its endpoints
Network Access Control
allRestrict network access to ElasticJob-UI to only trusted IP addresses or internal networks.
Configure firewall rules to limit inbound connections to ElasticJob-UI ports
🧯 If You Can't Patch
- Implement strong authentication controls and regularly rotate credentials
- Isolate ElasticJob-UI servers in a segmented network zone with strict egress filtering
🔍 How to Verify
Check if Vulnerable:
Check ElasticJob-UI version in web interface or configuration files. Versions 3.0.1 or earlier are vulnerable.Check Version:
Check web interface or examine configuration files for version informationVerify Fix Applied:
Verify version is 3.0.2 or later. Test that H2 JDBC URL functionality in Lite UI no longer accepts malicious inputs.📡 Detection & Monitoring
Log Indicators:
- Unusual H2 database connection attempts
- Suspicious JDBC URL patterns in logs
- Authentication attempts from unexpected sources
Network Indicators:
- Unexpected outbound connections from ElasticJob-UI servers
- Traffic to unusual ports or external IPs
SIEM Query:
Search for ElasticJob-UI logs containing H2 JDBC URL patterns or authentication events from suspicious IPs