CVE-2021-45716
📋 TL;DR
This vulnerability in the rusqlite Rust crate involves a use-after-free bug in the create_collation function. Attackers could exploit this to execute arbitrary code or cause denial of service in applications using vulnerable versions. Rust applications that use rusqlite for SQLite database operations are affected.
💻 Affected Systems
- rusqlite Rust crate
📦 What is this software?
Rusqlite by Rusqlite Project
Rusqlite by Rusqlite Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or service disruption.
Likely Case
Application crash or denial of service, potentially allowing limited memory corruption.
If Mitigated
Minimal impact if proper memory safety controls and sandboxing are implemented.
🎯 Exploit Status
Exploitation requires triggering the specific use-after-free condition through application logic.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.25.4 or 0.26.2
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2021-0128.html
Restart Required: Yes
Instructions:
1. Update Cargo.toml to specify rusqlite >=0.25.4 or >=0.26.2. 2. Run 'cargo update'. 3. Rebuild and redeploy your application.
🔧 Temporary Workarounds
Avoid create_collation function
allTemporarily remove or avoid using the create_collation function in your code.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for database operations
- Run application with memory safety protections (ASLR, DEP) and in sandboxed environments
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock or run 'cargo tree | grep rusqlite' to see installed version.Check Version:
cargo tree | grep rusqliteVerify Fix Applied:
Verify rusqlite version is 0.25.4+ or 0.26.2+ in Cargo.lock after update.📡 Detection & Monitoring
Log Indicators:
- Application crashes, segmentation faults, or abnormal termination related to database operations
Network Indicators:
- Unusual database query patterns or connection attempts
SIEM Query:
process.name:your_app AND (event.type:crash OR error.message:*segmentation*fault*)