CVE-2024-25371
📋 TL;DR
This vulnerability in Gramine allows attackers to potentially bypass security boundaries by exploiting mismatches between software signals and hardware exceptions. It affects systems running vulnerable versions of Gramine, which is used for running unmodified Linux applications in secure enclaves like Intel SGX.
💻 Affected Systems
- Gramine
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the secure enclave, allowing unauthorized access to protected data and code execution within the trusted execution environment.
Likely Case
Partial bypass of security controls, potentially leading to information disclosure or limited privilege escalation within the enclave.
If Mitigated
Minimal impact with proper enclave isolation and defense-in-depth controls in place.
🎯 Exploit Status
Proof of concept available in GitHub repository. Exploitation requires access to the enclave environment.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit a390e33e16ed374a40de2344562a937f289be2e1 or later
Vendor Advisory: https://github.com/gramineproject/gramine/commit/a390e33e16ed374a40de2344562a937f289be2e1
Restart Required: Yes
Instructions:
1. Update Gramine to commit a390e33e16ed374a40de2344562a937f289be2e1 or later. 2. Rebuild and redeploy affected enclave applications. 3. Restart enclave services.
🔧 Temporary Workarounds
Disable vulnerable enclave features
allTemporarily disable or restrict enclave functionality that relies on signal handling until patched.
🧯 If You Can't Patch
- Isolate enclave applications from untrusted networks and users
- Implement additional monitoring for enclave behavior anomalies
🔍 How to Verify
Check if Vulnerable:
Check Gramine version/git commit hash. If before a390e33e16ed374a40de2344562a937f289be2e1, system is vulnerable.Check Version:
gramine-sgx --version or check git commit in source installationVerify Fix Applied:
Verify Gramine is at commit a390e33e16ed374a40de2344562a937f289be2e1 or later.📡 Detection & Monitoring
Log Indicators:
- Unexpected enclave crashes
- Abnormal signal handling patterns in enclave logs
Network Indicators:
- Unusual enclave communication patterns
SIEM Query:
Search for Gramine enclave process anomalies or unexpected termination events