CVE-2019-1010038
📋 TL;DR
CVE-2019-1010038 is a buffer overflow vulnerability in OpenModelica OMCompiler that allows attackers to execute arbitrary code or cause denial of service by manipulating the OPENMODELICAHOME environment variable. This affects users running vulnerable versions of OpenModelica where the environment variable can be controlled by an attacker.
💻 Affected Systems
- OpenModelica OMCompiler
📦 What is this software?
Omcompiler by Openmodelica
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the OpenModelica process, potentially leading to full system compromise.
Likely Case
Denial of service through application crashes, with potential for limited code execution in specific configurations.
If Mitigated
No impact if environment variable manipulation is prevented through proper access controls.
🎯 Exploit Status
Exploitation requires ability to set environment variables on the target system, which typically requires some level of access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.14.0 and later
Vendor Advisory: https://trac.openmodelica.org/OpenModelica/ticket/4787
Restart Required: Yes
Instructions:
1. Download OpenModelica v1.14.0 or later from official repository. 2. Uninstall previous version. 3. Install patched version. 4. Restart system or services using OpenModelica.
🔧 Temporary Workarounds
Restrict Environment Variable Access
allPrevent untrusted users from modifying OPENMODELICAHOME environment variable
export OPENMODELICAHOME=/safe/path (Linux)
set OPENMODELICAHOME=C:\safe\path (Windows)
Run with Limited Privileges
linuxExecute OpenModelica with minimal necessary permissions
sudo -u restricted_user openmodelica
🧯 If You Can't Patch
- Restrict access to OpenModelica to trusted users only
- Implement strict environment variable controls and monitoring
🔍 How to Verify
Check if Vulnerable:
Check OpenModelica version: omc --version. If version is earlier than 1.14.0, system is vulnerable.Check Version:
omc --versionVerify Fix Applied:
After patching, verify version is 1.14.0 or later and test with controlled environment variable changes.📡 Detection & Monitoring
Log Indicators:
- OpenModelica process crashes
- Unusual environment variable modifications
Network Indicators:
- Not network exploitable - local vulnerability
SIEM Query:
Process:omc AND (EventID:1000 OR EventID:1001) OR EnvironmentVariable:OPENMODELICAHOME modified