CVE-2017-3234
📋 TL;DR
This vulnerability in Oracle Support Tools' Automatic Service Request (ASR) component allows unauthenticated attackers with network access to completely compromise the ASR service via the SFT protocol. It affects ASR Manager versions prior to 5.7, enabling attackers to take full control of the service with high impact on confidentiality, integrity, and availability.
💻 Affected Systems
- Oracle Support Tools
- Automatic Service Request (ASR)
- ASR Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete takeover of the ASR service, allowing attackers to execute arbitrary code, steal sensitive system information, disrupt service operations, and potentially pivot to other systems.
Likely Case
Remote code execution leading to system compromise, data exfiltration, and service disruption of the ASR component.
If Mitigated
Limited impact if network access is restricted and proper segmentation is in place, though the vulnerability remains present in the software.
🎯 Exploit Status
CVSS indicates easily exploitable by unauthenticated attackers with network access via SFT.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.7 or later
Vendor Advisory: http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html
Restart Required: Yes
Instructions:
1. Download and apply the latest Oracle Support Tools patch from My Oracle Support. 2. Update ASR Manager to version 5.7 or later. 3. Restart the ASR service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to ASR Manager service to only trusted hosts/networks
Use firewall rules to block SFT protocol (typically TCP port 443) from untrusted networks
Service Disablement
allTemporarily disable ASR Manager if not required
systemctl stop asr-manager (Linux)
sc stop "Oracle ASR Manager" (Windows)
🧯 If You Can't Patch
- Implement strict network access controls to limit SFT protocol access to only necessary administrative systems
- Monitor ASR Manager logs and network traffic for suspicious activity and unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check ASR Manager version: On Linux: 'asrctl version' or check installation directory. On Windows: Check program files or registry for version information.Check Version:
asrctl version (Linux) or check Oracle Support Tools documentation for WindowsVerify Fix Applied:
Verify ASR Manager version is 5.7 or later using the same version check commands, then test ASR functionality.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to ASR Manager
- Unexpected service restarts or crashes
- Unusual process creation from ASR service
Network Indicators:
- SFT protocol traffic from unexpected sources
- Multiple connection attempts to ASR Manager port
- Unusual data transfers from ASR service
SIEM Query:
source="asr-manager.log" AND (event="access denied" OR event="unauthorized" OR event="error")