CVE-2024-11495
📋 TL;DR
A buffer overflow vulnerability in OllyDbg 1.10 allows local attackers to execute arbitrary code by exploiting improper bounds checking. This affects users running the vulnerable version of this debugger software. Attackers could gain elevated privileges or compromise the system where OllyDbg is installed.
💻 Affected Systems
- OllyDbg
📦 What is this software?
Ollydbg by Ollydbg
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation leading to full system compromise, data theft, or installation of persistent malware.
Likely Case
Local attacker gains code execution with the privileges of the user running OllyDbg, potentially leading to lateral movement within the network.
If Mitigated
Limited impact if OllyDbg is run with minimal privileges and in isolated environments.
🎯 Exploit Status
Requires local access and knowledge of buffer overflow exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/buffer-overflow-ollydbg
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or discontinuing use of OllyDbg 1.10.
🔧 Temporary Workarounds
Remove or Replace OllyDbg
windowsUninstall OllyDbg 1.10 and replace with alternative debugger software
Control Panel > Programs > Uninstall a program > Select OllyDbg > Uninstall
Restrict Execution
windowsUse application control policies to prevent execution of OllyDbg 1.10
🧯 If You Can't Patch
- Run OllyDbg with minimal user privileges (non-admin account)
- Isolate systems running OllyDbg from critical network segments
🔍 How to Verify
Check if Vulnerable:
Check OllyDbg version by running the executable and viewing Help > About, or check file properties of OllyDbg.exeCheck Version:
wmic product where name="OllyDbg" get versionVerify Fix Applied:
Verify OllyDbg 1.10 is no longer installed on the system📡 Detection & Monitoring
Log Indicators:
- Process creation events for OllyDbg.exe
- Application crash logs related to OllyDbg
Network Indicators:
- Unusual outbound connections from systems known to run OllyDbg
SIEM Query:
ProcessName="OllyDbg.exe" AND Version="1.10"