CVE-2019-25009
📋 TL;DR
This vulnerability in the Rust http crate before version 0.1.20 involves improper use of raw pointers in the HeaderMap::Drain API, which can lead to memory corruption and potentially arbitrary code execution. It affects any Rust application using the vulnerable versions of the http crate. The CVSS 9.8 score indicates critical severity with network-accessible exploitation possible.
💻 Affected Systems
- Rust http crate
📦 What is this software?
Http by Hyper
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crash, denial of service, or memory corruption leading to unpredictable behavior.
If Mitigated
Limited impact if proper memory safety controls and sandboxing are implemented.
🎯 Exploit Status
Exploitation requires crafting specific HTTP requests to trigger the memory corruption via the HeaderMap::Drain API.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: http crate version 0.1.20 or later
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2019-0034.html
Restart Required: Yes
Instructions:
1. Update Cargo.toml to require http crate version >=0.1.20. 2. Run 'cargo update' to fetch the patched version. 3. Rebuild and redeploy your application. 4. Restart any running services using the updated application.
🔧 Temporary Workarounds
Avoid HeaderMap::Drain usage
allModify code to avoid using the HeaderMap::Drain API entirely.
Code modification required - no single command
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable applications from untrusted networks.
- Deploy web application firewalls (WAF) with memory corruption protection rules.
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock or run 'cargo tree | grep http' to see if http crate version <0.1.20 is used.Check Version:
grep -A2 -B2 'name = "http"' Cargo.lockVerify Fix Applied:
Verify Cargo.lock shows http crate version >=0.1.20 after update.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory corruption errors
- Unexpected segmentation faults in Rust HTTP services
Network Indicators:
- Unusual HTTP requests with manipulated headers targeting HeaderMap functionality
SIEM Query:
source="application.logs" AND ("segmentation fault" OR "memory corruption" OR "panic") AND process="rust_application"