CVE-2018-3581 Explained : Impact and Mitigation
Learn about CVE-2018-3581 affecting Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm. Discover the impact, affected systems, and mitigation steps for this WLAN driver vulnerability.
Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm, Inc. are affected by a WLAN driver vulnerability that can lead to a buffer overwrite issue when using the Linux Kernel.
Understanding CVE-2018-3581
This CVE involves an improper restriction of operations within the bounds of a memory buffer in WLAN.
What is CVE-2018-3581?
The WLAN driver in CAF's Android releases, including Android for MSM, Firefox OS for MSM, and QRD Android, is susceptible to a buffer overwrite issue due to a vdev_id exceeding the maximum allowed value for max_bssid.
The Impact of CVE-2018-3581
This vulnerability could be exploited by attackers to trigger a buffer overwrite, potentially leading to arbitrary code execution or system crashes.
Technical Details of CVE-2018-3581
The technical aspects of this CVE include:
Vulnerability Description
The buffer overwrite vulnerability in the WLAN driver of Android releases from CAF using the Linux Kernel.
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 issue arises when the vdev_id received from the firmware exceeds the maximum allowed value for max_bssid, potentially leading to a buffer overwrite.
Mitigation and Prevention
To address CVE-2018-3581, consider the following steps:
Immediate Steps to Take
- Apply patches provided by Qualcomm or the relevant vendor.
- Monitor security bulletins for updates and advisories.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software components.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and administrators on secure WLAN configuration practices.
Patching and Updates
- Stay informed about security updates from Qualcomm and other relevant sources.
- Apply patches promptly to mitigate the risk of exploitation.