CVE-2024-56450 – A buffer overflow vulnerability in a driver mod... (How to Fix)

Q: What is the severity of CVE-2024-56450?

CVE-2024-56450 has a CVSS score of 6.3 (MEDIUM). A buffer overflow vulnerability in a driver module allows attackers to crash affected systems, potentially causing denial of service. This affects Huawei devices running vulnerable driver versions. The vulnerability requires local access to exploit.

📋 TL;DR

A buffer overflow vulnerability in a driver module allows attackers to crash affected systems, potentially causing denial of service. This affects Huawei devices running vulnerable driver versions. The vulnerability requires local access to exploit.

💻 Affected Systems

Products:

Huawei devices with vulnerable driver modules

Versions: Specific versions not detailed in reference; check Huawei advisory for exact ranges

Operating Systems: Huawei proprietary OS/HarmonyOS

Default Config Vulnerable: ⚠️ Yes

Notes: Vulnerability exists in default driver configurations; exact product list requires checking Huawei bulletin.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system crash or kernel panic leading to sustained denial of service, requiring physical reboot.

🟠

Likely Case

Application or driver crash causing temporary service disruption until system recovery.

🟢

If Mitigated

Minimal impact with proper access controls preventing unauthorized local access to vulnerable interfaces.

🌐 Internet-Facing: LOW - Requires local access to exploit, not directly reachable from internet.

🏢 Internal Only: MEDIUM - Malicious insiders or compromised internal accounts could exploit this to disrupt services.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires local access and knowledge of driver interface; buffer overflow exploitation requires specific conditions.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Huawei security bulletin for specific patched versions

Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/1/

Restart Required: Yes

Instructions:

1. Check Huawei security advisory for affected products. 2. Download and apply latest firmware/security updates from Huawei. 3. Reboot device to activate patched driver.

🔧 Temporary Workarounds

Restrict local access

all

Limit physical and logical access to devices to authorized personnel only

Disable unnecessary driver modules

linux

If specific driver is not required, disable it to remove attack surface

Check Huawei documentation for driver management commands

🧯 If You Can't Patch

Implement strict access controls to prevent unauthorized local access
Monitor system logs for crash events related to driver modules

🔍 How to Verify

Check if Vulnerable:

Check device firmware version against Huawei security advisory; examine driver module versions if accessible

Check Version:

Check device settings or use Huawei-specific CLI commands (varies by product)

Verify Fix Applied:

Confirm firmware version matches patched version in Huawei advisory; verify no driver crashes occur during testing

📡 Detection & Monitoring

Log Indicators:

Kernel panic logs
Driver crash messages
System reboot events without clear cause

Network Indicators:

Unusual local access patterns to device management interfaces

SIEM Query:

EventType="System Crash" OR EventType="Kernel Panic" AND Source="Driver Module"

📊 Metadata

CVE ID: CVE-2024-56450

CVSS v3 Score: 6.3 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

CWE: CWE-120

EPSS Score: 0.02% exploit probability (2.7th percentile)

Published: January 8, 2025

Last Updated: January 13, 2025

🔗 References

https://consumer.huawei.com/en/support/bulletin/2025/1/ Vendor Advisory

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🔗 Related Vulnerabilities

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