CVE-2020-36462
📋 TL;DR
This vulnerability in the syncpool Rust crate allows data races and memory corruption due to an unconditional Send implementation for Bucket2. It affects any Rust application using syncpool versions before 0.1.6, potentially leading to undefined behavior, crashes, or security bypasses.
💻 Affected Systems
- syncpool Rust crate
📦 What is this software?
Syncpool by Syncpool Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution or complete system compromise through memory corruption leading to arbitrary code execution.
Likely Case
Application crashes, data corruption, or denial of service due to undefined behavior from data races.
If Mitigated
Limited impact with proper sandboxing and memory safety controls, but still potential for crashes.
🎯 Exploit Status
Exploitation requires specific conditions to trigger data races and memory corruption.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.1.6
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2020-0142.html
Restart Required: Yes
Instructions:
1. Update Cargo.toml to specify syncpool = '>=0.1.6'. 2. Run 'cargo update syncpool'. 3. Rebuild and redeploy your application.
🔧 Temporary Workarounds
Remove syncpool dependency
allCompletely remove syncpool crate from your project if not essential
cargo remove syncpool
Pin to patched version
allForce dependency resolution to safe version
Add to Cargo.toml: syncpool = '=0.1.6'
🧯 If You Can't Patch
- Isolate affected applications in containers with minimal privileges
- Implement runtime monitoring for memory corruption indicators and crashes
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock for syncpool version <0.1.6 or run: cargo tree | grep syncpoolCheck Version:
grep syncpool Cargo.lock | head -1Verify Fix Applied:
Verify Cargo.lock shows syncpool 0.1.6 or later, and application builds without warnings📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory corruption errors
- Rust panic messages related to thread safety
Network Indicators:
- Unusual application restarts
- Increased error rates in service monitoring
SIEM Query:
source="application_logs" AND ("panic" OR "memory corruption" OR "data race")