CVE-2022-25987
📋 TL;DR
This vulnerability in Intel C++ Compiler Classic allows improper Unicode encoding handling during compilation, potentially enabling privilege escalation. It affects users of Intel oneAPI Toolkits before version 2022.2 who compile untrusted source code. An attacker could exploit this via network access to gain elevated privileges.
💻 Affected Systems
- Intel C++ Compiler Classic
- Intel oneAPI Toolkits
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with root/admin privileges achieved through successful exploitation of the compiler vulnerability during build processes.
Likely Case
Privilege escalation in development/build environments where untrusted code is compiled, potentially leading to code execution in CI/CD pipelines.
If Mitigated
Limited impact if only trusted source code is compiled and network access to build systems is restricted.
🎯 Exploit Status
Exploitation requires crafting malicious source code with specific Unicode encoding that triggers the vulnerability during compilation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Intel C++ Compiler Classic 2021.6 or later, Intel oneAPI Toolkits 2022.2 or later
Vendor Advisory: http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00674.html
Restart Required: No
Instructions:
1. Update Intel C++ Compiler Classic to version 2021.6 or later. 2. Update Intel oneAPI Toolkits to version 2022.2 or later. 3. Recompile any previously compiled code with the updated compiler.
🔧 Temporary Workarounds
Restrict compilation to trusted source
allOnly compile source code from trusted, verified sources to prevent malicious Unicode exploitation.
Network segmentation for build systems
allIsolate build/compilation systems from untrusted networks and limit access to authorized users only.
🧯 If You Can't Patch
- Implement strict source code validation and scanning for Unicode anomalies before compilation
- Run compilation processes with minimal necessary privileges (non-root/non-admin accounts)
🔍 How to Verify
Check if Vulnerable:
Check compiler version: icc --version or icx --version. If version is earlier than 2021.6 for icc or part of oneAPI Toolkits earlier than 2022.2, system is vulnerable.Check Version:
icc --version # For Intel C++ Compiler ClassicVerify Fix Applied:
Verify compiler version is 2021.6 or later for Intel C++ Compiler Classic, or oneAPI Toolkits version is 2022.2 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual compilation errors related to Unicode/encoding
- Compilation processes running with unexpected privileges
- Network connections to build systems from unauthorized sources
Network Indicators:
- Unexpected network traffic to compilation/build system ports
- Source code transfers from untrusted sources to build systems
SIEM Query:
process_name:"icc" OR process_name:"icx" AND (event_type:"process_start" OR event_type:"network_connection")