CVE-2022-30055
📋 TL;DR
CVE-2022-30055 is a buffer overflow vulnerability in Prime95 version 30.7 build 9 that allows remote attackers to execute arbitrary code on affected systems. This affects users running vulnerable versions of Prime95, particularly those using it for distributed computing or benchmarking purposes. The vulnerability stems from improper bounds checking in buffer operations.
💻 Affected Systems
- Prime95
📦 What is this software?
Prime95 by Mersenne
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, allowing attackers to install malware, steal data, or pivot to other systems.
Likely Case
System compromise leading to data theft, cryptocurrency mining, or botnet enrollment.
If Mitigated
Limited impact if proper network segmentation and least privilege principles are applied.
🎯 Exploit Status
Public exploit code is available, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 30.8 or later
Vendor Advisory: https://www.mersenne.org/download/
Restart Required: Yes
Instructions:
1. Download Prime95 version 30.8 or later from the official website. 2. Stop the Prime95 service/process. 3. Install the updated version. 4. Restart the Prime95 service/process.
🔧 Temporary Workarounds
Network Isolation
allBlock network access to Prime95 ports and services
iptables -A INPUT -p tcp --dport [Prime95_port] -j DROP
netsh advfirewall firewall add rule name="Block Prime95" dir=in action=block program="C:\path\to\prime95.exe"
Service Disablement
allTemporarily disable Prime95 service until patching
systemctl stop prime95
sc stop Prime95
🧯 If You Can't Patch
- Remove Prime95 from affected systems entirely
- Implement strict network segmentation to isolate Prime95 systems
🔍 How to Verify
Check if Vulnerable:
Check Prime95 version by running the executable with --version flag or checking the about dialogCheck Version:
prime95 --version (Linux) or check Help > About in GUI (Windows)Verify Fix Applied:
Verify installed version is 30.8 or later using the same method📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from Prime95 executable
- Network connections from Prime95 to unexpected destinations
- Crash logs from Prime95
Network Indicators:
- Unexpected network traffic on Prime95 default ports
- Suspicious payloads in network traffic to Prime95
SIEM Query:
process_name:"prime95.exe" AND (event_type:"process_creation" OR event_type:"network_connection")