CVE-2022-43495 : What You Need to Know

OpenHarmony-v3.1.2 and prior versions had a Denial of Service (DOS) vulnerability in distributedhardware_device_manager when joining a network, allowing network attackers to send an abnormal packet, leading to a nullptr reference and device reboot.

Understanding CVE-2022-43495

This vulnerability, identified as CAPEC-153 Input Data Manipulation, poses a medium-severity risk with a CVSS base score of 6.5.

What is CVE-2022-43495?

The DOS vulnerability in OpenHarmony-v3.1.2 and earlier versions occurs in distributedhardware_device_manager during network connection, enabling malicious network attackers to disrupt devices by triggering a nullptr reference that results in device reboot.

The Impact of CVE-2022-43495

CAPEC-153 Input Data Manipulation vulnerability can lead to a denial of service attack, causing high availability impact on affected devices.

Technical Details of CVE-2022-43495

The vulnerability is classified under CWE-476 NULL Pointer Dereference and has a low attack complexity and requires no special privileges or user interaction. The attack vector is through an adjacent network.

Vulnerability Description

OpenHarmony-v3.1.2 and earlier versions are susceptible to a DOS attack when joining a network due to a nullptr reference issue in distributedhardware_device_manager.

Affected Systems and Versions

The affected product is OpenHarmony-v3.1.0, along with prior versions.

Exploitation Mechanism

Malicious network attackers can exploit this vulnerability by sending an abnormal packet during network connections to trigger the DOS condition.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-43495, immediate steps should be taken along with implementing long-term security practices and applying necessary patches and updates.

Immediate Steps to Take

Ensure network security protocols are in place, monitor abnormal network activities, and restrict network access to mitigate the vulnerability.

Long-Term Security Practices

Regularly update and patch OpenHarmony systems, conduct security audits, and educate users on safe network practices to prevent similar vulnerabilities.

Patching and Updates

Refer to the vendor's advisory for specific patch information and update guidelines.