CVE-2018-5828 : Security Advisory and Response
Learn about CVE-2018-5828 affecting Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm, Inc. Understand the impact, technical details, and mitigation steps for this vulnerability.
Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm, Inc. are affected by a vulnerability that could lead to a buffer overwrite.
Understanding CVE-2018-5828
This CVE involves an improper restriction of operations within the bounds of a memory buffer in WLAN.
What is CVE-2018-5828?
The function wma_extscan_start_stop_event_handler() in Qualcomm Android for MSM, Firefox OS for MSM, and QRD Android with all Android releases from CAF using the Linux kernel before security patch level 2018-04-05 may encounter a buffer overwrite if vdev_id, obtained from the firmware's event variable, is not adequately validated.
The Impact of CVE-2018-5828
This vulnerability could potentially allow attackers to trigger a buffer overwrite, leading to unauthorized access or denial of service.
Technical Details of CVE-2018-5828
The technical details of this CVE are as follows:
Vulnerability Description
In Qualcomm Android for MSM, Firefox OS for MSM, and QRD Android with all Android releases from CAF using the Linux kernel before security patch level 2018-04-05, the function wma_extscan_start_stop_event_handler() may encounter a buffer overwrite if vdev_id is not properly validated.
Affected Systems and Versions
- Product: Android for MSM, Firefox OS for MSM, QRD Android
- Vendor: Qualcomm, Inc.
- Versions: All Android releases from CAF using the Linux kernel
Exploitation Mechanism
The vulnerability arises due to inadequate validation of the vdev_id variable obtained from the firmware's event, potentially leading to a buffer overwrite.
Mitigation and Prevention
To address CVE-2018-5828, consider the following steps:
Immediate Steps to Take
- Apply the necessary security patch level 2018-04-05 or later to mitigate the vulnerability.
- Regularly monitor for security updates from Qualcomm and apply them promptly.
Long-Term Security Practices
- Implement secure coding practices to validate input data thoroughly.
- Conduct regular security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security bulletins and patches released by Qualcomm for the affected products and promptly apply them to ensure system security.