CVE-2023-28507
📋 TL;DR
This vulnerability in Rocket Software UniData and UniVerse allows remote attackers to cause denial of service by exhausting system memory through a decompression routine. Affected systems will crash when exploited, impacting availability of database services. Organizations running vulnerable versions of these database platforms are at risk.
💻 Affected Systems
- Rocket Software UniData
- Rocket Software UniVerse
📦 What is this software?
Unidata by Rocketsoftware
Universe by Rocketsoftware
Universe by Rocketsoftware
⚠️ Risk & Real-World Impact
Worst Case
Complete system memory exhaustion leading to database service crash and denial of service, potentially affecting multiple systems if the process forks repeatedly.
Likely Case
Targeted database service crashes causing application downtime and service disruption until systems are restarted.
If Mitigated
Limited impact with proper network segmentation and monitoring, though service interruption may still occur if exploited.
🎯 Exploit Status
The vulnerability requires network access to the UniRPC service but no authentication. Exploitation appears straightforward based on the memory exhaustion mechanism.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: UniData 8.2.4 build 3003 or later; UniVerse 11.3.5 build 1001 or later, or 12.2.1 build 2002 or later
Vendor Advisory: https://www.rocketsoftware.com/support
Restart Required: Yes
Instructions:
1. Download the appropriate patched version from Rocket Software support portal. 2. Backup current installation and data. 3. Install the updated version following vendor documentation. 4. Restart the UniRPC service and verify functionality.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to UniRPC service ports to only trusted sources
iptables -A INPUT -p tcp --dport [UNIRPC_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [UNIRPC_PORT] -j DROP
Service Disablement
linuxTemporarily disable UniRPC service if not required for operations
systemctl stop unirpc
systemctl disable unirpc
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems from untrusted networks
- Deploy memory monitoring and alerting to detect exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check installed version against affected version ranges: UniData < 8.2.4 build 3003 or UniVerse < 11.3.5 build 1001 and < 12.2.1 build 2002Check Version:
Consult product documentation for version checking commands specific to your installationVerify Fix Applied:
Confirm version is at or above patched versions: UniData >= 8.2.4 build 3003 or UniVerse >= 11.3.5 build 1001 or >= 12.2.1 build 2002📡 Detection & Monitoring
Log Indicators:
- Unusual memory consumption patterns
- Process crashes of UniRPC service
- Repeated connection attempts to UniRPC ports
Network Indicators:
- Multiple connections to UniRPC service ports from single sources
- Unusual traffic patterns to database service ports
SIEM Query:
source="unirpc.log" AND ("out of memory" OR "crash" OR "segmentation fault")