CVE-2021-22295 : What You Need to Know
Learn about CVE-2021-22295, a HarmonyOS vulnerability allowing local attackers to cause device hang-ups. Explore impact, affected systems, and mitigation steps.
A component of the HarmonyOS has a permission bypass vulnerability that could be exploited by local attackers to cause the device to hang due to a page error in OsVmPageFaultHandler.
Understanding CVE-2021-22295
This CVE identifies a vulnerability in HarmonyOS that allows for a permission bypass, leading to potential device hang-up scenarios.
What is CVE-2021-22295?
The CVE-2021-22295 vulnerability involves an improper restriction of operations within the bounds of a memory buffer in HarmonyOS, version 2.0, developed by Huawei.
The Impact of CVE-2021-22295
The vulnerability allows local attackers to exploit the permission bypass issue, potentially causing the device to hang due to the OsVmPageFaultHandler error. This could disrupt device functionality and compromise user experience.
Technical Details of CVE-2021-22295
This section provides more specific technical details related to the CVE.
Vulnerability Description
The vulnerability in HarmonyOS version 2.0 allows for a permission bypass, enabling local attackers to manipulate the device and induce a hang-up situation through OsVmPageFaultHandler errors.
Affected Systems and Versions
HarmonyOS version 2.0 developed by Huawei is affected by this vulnerability.
Exploitation Mechanism
Local attackers can exploit this vulnerability to circumvent permissions and trigger the device to hang by exploiting the page error in OsVmPageFaultHandler.
Mitigation and Prevention
To protect against CVE-2021-22295, immediate actions and long-term security practices can be implemented.
Immediate Steps to Take
Users are advised to update their HarmonyOS devices to the latest version provided by Huawei. Additionally, users should exercise caution while interacting with suspicious or untrusted applications to mitigate the risk of exploitation.
Long-Term Security Practices
Implementing security best practices, such as regularly updating the operating system and applications, utilizing firewalls, and conducting security audits, can enhance the overall security posture of HarmonyOS devices.
Patching and Updates
Huawei should release patches promptly to address the permission bypass vulnerability in HarmonyOS version 2.0, ensuring that users can protect their devices effectively.