CVE-2021-23243 : Security Advisory and Response
Learn about CVE-2021-23243, an elevation of privilege vulnerability in OPPO Android phones with Qualcomm chipset running Android 11. Find out the impact, affected systems, and mitigation steps.
This CVE involves an elevation of privilege vulnerability in OPPO Android phones with Qualcomm chipsets running on Android 11. The issue arises due to a third-party SDK function in Oppo's battery application.
Understanding CVE-2021-23243
This section provides an overview of the CVE-2021-23243 vulnerability.
What is CVE-2021-23243?
CVE-2021-23243 is an elevation of privilege vulnerability found in OPPO Android phones with Qualcomm chipsets and Android 11, related to the loading of a third-party Provider function in Oppo's battery application.
The Impact of CVE-2021-23243
Exploitation of this vulnerability could allow a malicious app to gain elevated privileges on the affected device, leading to potential compromise of user data and unauthorized access.
Technical Details of CVE-2021-23243
In this section, we delve into the technical aspects of CVE-2021-23243.
Vulnerability Description
The flaw stems from the third-party SDK function in Oppo's battery application that permits loading a third-party Provider, which can be manipulated by an attacker for malicious purposes.
Affected Systems and Versions
OPPO Mobile phones with Qualcomm chipsets running on Android 11 are impacted by this vulnerability. Devices using this specific configuration are at risk.
Exploitation Mechanism
An attacker could exploit this vulnerability by tricking a user into installing a malicious app that leverages the third-party Provider function to escalate privileges on the device.
Mitigation and Prevention
Here, we outline the steps to mitigate and prevent exploitation of CVE-2021-23243.
Immediate Steps to Take
Users are advised to exercise caution when installing apps from unknown sources and to update their OPPO devices to the latest available firmware to patch this vulnerability.
Long-Term Security Practices
Practicing good security hygiene, such as regularly updating software and avoiding suspicious apps or links, can help prevent similar vulnerabilities in the future.
Patching and Updates
OPPO may release security updates addressing CVE-2021-23243, and users should promptly apply these patches to secure their devices.