CVE-2024-1545
📋 TL;DR
This CVE describes a fault injection vulnerability in the RsaPrivateDecryption function of WolfSSL, allowing a co-resident attacker on the same system to potentially disclose sensitive information or escalate privileges via Rowhammer attacks. It affects WolfSSL version 5.6.6 on Linux and Windows systems where the library is used. The risk is primarily to processes sharing hardware with malicious actors, not typical remote attackers.
💻 Affected Systems
- WolfSSL
📦 What is this software?
Wolfssl by Wolfssl
⚠️ Risk & Real-World Impact
Worst Case
An attacker co-residing on the same system could exploit this to decrypt RSA-encrypted data or gain unauthorized access to cryptographic keys, leading to privilege escalation or data breach.
Likely Case
In most scenarios, exploitation requires physical or virtual co-residency with the victim process, making it less likely in isolated environments but a concern in shared hosting or cloud setups.
If Mitigated
With proper isolation controls like hardware separation or patching, the impact is minimal as the attack vector is constrained to local system access.
🎯 Exploit Status
Exploitation is complex and not trivial; it relies on physical or virtual proximity to the victim process, making widespread attacks unlikely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v5.7.0-stable
Vendor Advisory: https://github.com/wolfSSL/wolfssl/releases/tag/v5.7.0-stable
Restart Required: Yes
Instructions:
1. Download WolfSSL v5.7.0 or later from the official repository. 2. Replace the vulnerable version with the patched one. 3. Recompile and reinstall the library. 4. Restart any applications or services using WolfSSL to apply the fix.
🔧 Temporary Workarounds
Isolate Processes
allImplement strict process isolation or sandboxing to prevent co-resident attackers from accessing the victim process.
Use containerization (e.g., Docker with security profiles) or virtual machines to separate processes.
🧯 If You Can't Patch
- Enhance system hardening by limiting physical or virtual access to shared hardware, reducing the attack surface for co-resident threats.
- Monitor system logs for unusual activity or fault injection attempts and implement intrusion detection measures.
🔍 How to Verify
Check if Vulnerable:
Check the WolfSSL version in use; if it is 5.6.6, the system is vulnerable. Use 'wolfssl_version' or inspect library files.Check Version:
On Linux: 'strings /path/to/libwolfssl.so | grep -i version' or check package manager; on Windows, inspect DLL properties or use system tools.Verify Fix Applied:
After patching, verify the version is 5.7.0 or higher using the same method and test RSA operations for stability.📡 Detection & Monitoring
Log Indicators:
- Look for system logs indicating hardware faults, memory errors, or unexpected process crashes that could signal Rowhammer attacks.
Network Indicators:
- No direct network indicators, as this is a local attack; focus on system-level anomalies.
SIEM Query:
Example: 'source=system_logs event_type=crash OR memory_error AND process_name=*wolfssl*' to detect potential exploitation attempts.