CVE-2020-36452
📋 TL;DR
This vulnerability in the array-tools Rust crate allows attackers to cause memory corruption by exploiting uninitialized memory drops in the FixedCapacityDequeLike::clone() function. This can lead to arbitrary code execution, denial of service, or information disclosure. Any Rust application using vulnerable versions of the array-tools crate is affected.
💻 Affected Systems
- array-tools Rust crate
📦 What is this software?
Array Tools by Array Tools Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crashes, 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 triggering the vulnerable clone() function with specific memory conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.3.2
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2020-0132.html
Restart Required: Yes
Instructions:
1. Update Cargo.toml to specify array-tools >= 0.3.2
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
Remove array-tools dependency
allIf possible, remove the array-tools crate from your project and use alternative implementations.
cargo remove array-tools
Pin to safe version
allForce Cargo to use version 0.3.2 or later in your dependency specification.
In Cargo.toml: array-tools = ">=0.3.2"
🧯 If You Can't Patch
- Isolate affected applications in network segments with strict access controls
- Implement runtime memory protection mechanisms like ASLR and DEP where available
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock or run 'cargo tree | grep array-tools' to see if version <0.3.2 is used.Check Version:
grep array-tools Cargo.lock | head -1Verify Fix Applied:
Verify Cargo.lock shows array-tools version 0.3.2 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Unexpected memory access errors in Rust panic messages
Network Indicators:
- Unusual outbound connections from Rust applications
- Traffic patterns suggesting exploitation attempts
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "memory corruption" OR "array-tools")🔗 References
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/array-tools/RUSTSEC-2020-0132.md
- https://rustsec.org/advisories/RUSTSEC-2020-0132.html
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/array-tools/RUSTSEC-2020-0132.md
- https://rustsec.org/advisories/RUSTSEC-2020-0132.html
