CVE-2022-34632
📋 TL;DR
CVE-2022-34632 is an insufficient cryptography vulnerability in Rocket-Chip's RocketCore.scala component that allows attackers to bypass cryptographic protections. This affects systems using vulnerable versions of the Rocket-Chip RISC-V processor generator. The vulnerability could enable unauthorized access to protected data or system resources.
💻 Affected Systems
- Rocket-Chip RISC-V processor generator
📦 What is this software?
Rocket Chip Generator by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of cryptographic protections leading to data exfiltration, unauthorized system access, or manipulation of secure operations
Likely Case
Partial bypass of cryptographic controls allowing limited unauthorized access to protected resources
If Mitigated
Minimal impact if proper network segmentation and access controls are implemented
🎯 Exploit Status
Exploitation requires understanding of the specific cryptographic implementation and hardware architecture
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit 4f8114374d8824dfdec03f576a8cd68bebce4e56 and later
Vendor Advisory: https://github.com/chipsalliance/rocket-chip/pull/2950
Restart Required: Yes
Instructions:
1. Update Rocket-Chip to commit 4f8114374d8824dfdec03f576a8cd68bebce4e56 or later. 2. Regenerate affected hardware designs. 3. Redeploy updated hardware designs to affected systems.
🔧 Temporary Workarounds
Disable affected cryptographic functions
allTemporarily disable cryptographic operations that rely on the vulnerable component
# Configuration dependent - modify hardware design to bypass affected crypto functions
🧯 If You Can't Patch
- Implement additional software-based cryptographic validation layers
- Isolate systems using vulnerable hardware from sensitive networks and data
🔍 How to Verify
Check if Vulnerable:
Check Rocket-Chip commit hash - if before 4f8114374d8824dfdec03f576a8cd68bebce4e56, system is vulnerableCheck Version:
git log --oneline -1Verify Fix Applied:
Verify Rocket-Chip is at commit 4f8114374d8824dfdec03f576a8cd68bebce4e56 or later📡 Detection & Monitoring
Log Indicators:
- Unexpected cryptographic operation failures
- Unauthorized access attempts to protected resources
Network Indicators:
- Unusual patterns in encrypted traffic
- Attempts to bypass cryptographic handshakes
SIEM Query:
Search for failed cryptographic operations or unauthorized access to crypto-protected resources🔗 References
- https://github.com/chipsalliance/rocket-chip/pull/2950#issuecomment-1106745660
- https://github.com/chipsalliance/rocket-chip/pull/2950#issuecomment-1107055607
- https://github.com/chipsalliance/rocket-chip/pull/2950/commits/4f8114374d8824dfdec03f576a8cd68bebce4e56
- https://github.com/chipsalliance/rocket-chip/pull/2950#issuecomment-1106745660
- https://github.com/chipsalliance/rocket-chip/pull/2950#issuecomment-1107055607
- https://github.com/chipsalliance/rocket-chip/pull/2950/commits/4f8114374d8824dfdec03f576a8cd68bebce4e56
