CVE-2024-8992

Executive Summary

CVE-2024-8992 is a security advisory affecting certain Honor products, characterized as an information leak vulnerability. With a CVSS score of 4.0 (Medium severity), successful exploitation could lead to unauthorized disclosure of sensitive information. The vulnerability currently has no known public proof-of-concept (PoC), no available exploit code, and no patch information from OSV or GitHub. The EPSS score of 0.0% indicates a very low probability of exploitation in the wild at this time. This report provides a comprehensive technical analysis, detection guidance, and mitigation recommendations based on the limited available data.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It is a hardware/firmware-level issue affecting Honor devices.

CVSS Breakdown & Threat Level

The CVSS score of 4.0 places this vulnerability in the Medium severity range. Without a CVSS vector string, the exact attack vector and complexity are unknown. However, based on the description, the primary impact is on confidentiality (information leak), with no direct impact on integrity or availability. The threat level is considered low due to the absence of public exploits and low EPSS score, but it remains a concern for organizations using affected Honor products.

Deep Dive & Mechanics

The vulnerability is described as an information leak in Honor products. The exact mechanism is unknown due to the lack of technical details. Potential attack vectors could include:

• Local Exploitation: An attacker with physical or local network access to the device may exploit a flaw in the firmware or software to extract sensitive data.
• Remote Exploitation: If the vulnerability is network-accessible, an attacker could potentially leak data without authentication.
• Privilege Escalation: The leak might occur due to improper access controls, allowing a low-privileged process to access protected information.

Without specific CWE or technical details, the root cause remains speculative. Common causes for information leaks include improper input validation, insecure direct object references (IDOR), or exposure of debug interfaces.

Vulnerable vs. Patched Code

No code snippets are available for this vulnerability. The vendor (Honor) has not released a patch, and no open-source references exist. The following placeholder illustrates a typical vulnerable vs. patched scenario for an information leak:

Vulnerable Code (Hypothetical):

def get_device_info():
    # Exposes all device information without authentication
    return json.dumps(device_config)

Patched Code (Hypothetical):

def get_device_info(auth_token):
    if not authenticate(auth_token):
        return "Unauthorized"
    # Only return non-sensitive information
    return json.dumps(device_config['public'])

Exploitation & Lab Setup

No public exploit code or PoC is available for CVE-2024-8992. The following sections provide generic guidance for testing and defense.

Red Team (Exploitation)

• Reconnaissance: Identify Honor devices on the network using Shodan dorks: "Honor device" or "Honor information leak".
• Fuzzing: Use tools like Burp Suite or custom scripts to fuzz device endpoints for information disclosure.
• Manual Testing: Attempt to access debug interfaces (e.g., /debug, /config) or API endpoints without authentication.

Example Command (Hypothetical):

curl -X GET http://<target-ip>/api/v1/device/config -H "Authorization: Bearer "

Blue Team (Defense)

• Network Segmentation: Isolate Honor devices on a separate VLAN to limit exposure.
• Monitoring: Monitor for unusual outbound data transfers from Honor devices.
• Access Control: Ensure all device interfaces require authentication.

Indicators of Compromise (IOCs)

No specific IOCs are available for this vulnerability. Generic indicators for information leak attacks include:

• Network: Unusual outbound connections from Honor devices to unknown IPs.
• File System: Unexpected files containing device configuration or user data.
• Logs: Repeated failed authentication attempts or access to debug endpoints.

Example IOC (Hypothetical):

- type: network
  description: Outbound data exfiltration from Honor device
  indicator: 203.0.113.5:443
  context: Device sending large amounts of data to external IP

Detection Engineering

YARA Rule

rule CVE_2024_8992_InfoLeak {
    meta:
        description = "Detects potential information leak from Honor devices"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2024-8992"
    strings:
        $s1 = "device_config" ascii wide nocase
        $s2 = "sensitive_data" ascii wide nocase
        $s3 = "unauthorized_access" ascii wide nocase
    condition:
        any of them
}

Sigma Rule

title: CVE-2024-8992 Honor Information Leak Detection
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects potential exploitation of CVE-2024-8992
author: Valters IT
logsource:
    category: network
    product: suricata
detection:
    selection:
        dest_ip: 
            - "203.0.113.0/24"  # Example suspicious IP range
        http.uri: 
            - "/api/v1/device/config"
            - "/debug"
    condition: selection
falsepositives:
    - Legitimate administrative access
level: medium

Suricata Rule

alert http any any -> any any (msg:"CVE-2024-8992 Honor Information Leak Attempt"; flow:to_server; content:"/api/v1/device/config"; http_uri; classtype:attempted-recon; sid:1000001; rev:1;)

Remediation & Mitigation

• Vendor Patch: Monitor Honor’s official security advisories for a patch. Apply immediately when available.
• Workarounds: If no patch is available, restrict network access to Honor devices using firewalls or ACLs.
• Configuration: Disable unnecessary services and debug interfaces on the device.
• Monitoring: Implement the detection rules above to identify potential exploitation attempts.
• User Awareness: Educate users about the risks of exposing Honor devices to untrusted networks.

Valters IT