CVE-2021-32835
📋 TL;DR
CVE-2021-32835 is a sandbox escape vulnerability in Eclipse Keti that allows authenticated attackers to execute arbitrary code on affected systems. This affects organizations using Eclipse Keti for RESTful API protection with ABAC. The vulnerability exists in the latest commit at the time of disclosure.
💻 Affected Systems
- Eclipse Keti
📦 What is this software?
Keti by Eclipse
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the server, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to service disruption, data theft, and potential privilege escalation within the environment.
If Mitigated
Limited impact if proper network segmentation, least privilege access, and monitoring are in place, though code execution would still be possible.
🎯 Exploit Status
Exploit details are publicly available in the GHSL advisory. Attack requires authentication but is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit after a1c8dbe
Vendor Advisory: https://github.com/eclipse/keti/security/advisories
Restart Required: Yes
Instructions:
1. Update Eclipse Keti to latest version after commit a1c8dbe. 2. Review and apply security patches from Eclipse Foundation. 3. Restart Keti service after update.
🔧 Temporary Workarounds
Disable vulnerable endpoints
allIdentify and disable specific endpoints that allow sandbox escape if not required for functionality
Network segmentation
allIsolate Keti instances from sensitive systems and limit network access
🧯 If You Can't Patch
- Implement strict authentication controls and monitor for suspicious authentication attempts
- Deploy web application firewall with rules to detect and block exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check Keti version/commit hash. If using commit a1c8dbe or earlier, system is vulnerable.Check Version:
Check Keti configuration files or deployment logs for version/commit informationVerify Fix Applied:
Verify Keti is updated to commit after a1c8dbe and test sandbox functionality📡 Detection & Monitoring
Log Indicators:
- Unusual process execution from Keti service
- Authentication logs showing suspicious user activity
- Error logs containing sandbox escape attempts
Network Indicators:
- Unusual outbound connections from Keti server
- Traffic patterns indicating command execution
SIEM Query:
source="keti" AND (process_execution OR command_injection OR sandbox_escape)