CVE-2020-35872
📋 TL;DR
CVE-2020-35872 is a memory safety vulnerability in the rusqlite crate for Rust that allows memory corruption through improper handling of repr(Rust) types. This affects any Rust application using rusqlite versions before 0.23.0 for SQLite database operations. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- rusqlite Rust crate
📦 What is this software?
Rusqlite by Rusqlite Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crash or denial of service due to memory corruption, potentially leading to data corruption in SQLite databases.
If Mitigated
Limited impact with proper sandboxing and privilege separation, though memory corruption could still cause crashes.
🎯 Exploit Status
Exploitation requires crafting malicious SQLite database operations that trigger the memory safety issue.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.23.0 and later
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2020-0014.html
Restart Required: Yes
Instructions:
1. Update Cargo.toml to require rusqlite >= 0.23.0
2. Run 'cargo update rusqlite'
3. Rebuild and redeploy your application
4. Restart any running services using the updated application
🔧 Temporary Workarounds
Disable vulnerable functionality
allAvoid using repr(Rust) types with rusqlite operations
🧯 If You Can't Patch
- Implement strict input validation on all SQLite database operations
- Run vulnerable applications in sandboxed environments with minimal privileges
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock or Cargo.toml for rusqlite dependency versionCheck Version:
grep rusqlite Cargo.lock | grep versionVerify Fix Applied:
Verify rusqlite version is 0.23.0 or higher in Cargo.lock📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory corruption errors
- Segmentation faults in Rust processes using SQLite
Network Indicators:
- Unusual database query patterns to SQLite interfaces
SIEM Query:
process.name:rust AND event.type:crash AND process.cmdline:*rusqlite*