CVE-2022-21779 : Exploit Details and Defense Strategies
Learn about CVE-2022-21779, a MediaTek WLAN driver vulnerability allowing local privilege escalation without user interaction. Find mitigation steps and impacted systems.
A vulnerability has been identified in MediaTek WLAN driver that could allow an attacker to perform an out-of-bounds write, leading to local privilege escalation without requiring user interaction. Here is what you need to know about CVE-2022-21779.
Understanding CVE-2022-21779
This section provides insights into the nature and impact of the CVE-2022-21779 vulnerability.
What is CVE-2022-21779?
The CVE-2022-21779 vulnerability exists in the MediaTek WLAN driver, allowing attackers to exploit a missing bounds check, resulting in local privilege escalation with System execution privileges required.
The Impact of CVE-2022-21779
The impact of this vulnerability is the potential local escalation of privilege, which could be exploited without the need for user interaction. This poses a significant security risk to affected systems.
Technical Details of CVE-2022-21779
This section delves into the technical aspects of the CVE-2022-21779 vulnerability.
Vulnerability Description
The vulnerability stems from the missing bounds check in the WLAN driver, enabling an attacker to perform an out-of-bounds write, leading to privilege escalation.
Affected Systems and Versions
The vulnerability affects a range of MediaTek products running Android 11.0 and 12.0. Refer to the vendor's security bulletin for a comprehensive list of impacted versions.
Exploitation Mechanism
Exploiting CVE-2022-21779 does not require user interaction, making it easier for attackers to leverage the vulnerability for malicious purposes.
Mitigation and Prevention
Protecting systems against CVE-2022-21779 involves immediate actions and long-term security practices.
Immediate Steps to Take
Users and organizations are advised to apply the provided patch (Patch ID: ALPS06704526) to mitigate the vulnerability's exploitation and enhance system security.
Long-Term Security Practices
In addition to patching, implementing robust security measures, such as network segmentation, access controls, and regular security updates, can help mitigate the risk of similar vulnerabilities.
Patching and Updates
Regularly updating and patching affected systems is crucial to address known vulnerabilities and protect against potential exploitation.