CVE-2018-11294 : Exploit Details and Defense Strategies

Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm are affected by a firmware issue related to WLAN handler indication processing.

Understanding CVE-2018-11294

This CVE involves an improper conditional logic issue in the firmware of CAF-based Android releases, leading to incomplete copying of WLAN handler indication information.

What is CVE-2018-11294?

The firmware in CAF-based Android releases, including Android for MSM, Firefox OS for MSM, and QRD Android, uses the Linux kernel to handle WLAN information. However, due to a flaw in the conditional logic, only the first 3 out of 4 access category information is correctly copied during processing.

The Impact of CVE-2018-11294

This vulnerability could potentially lead to incomplete or inaccurate WLAN handler indication information, affecting the proper functioning of wireless communication on the affected devices.

Technical Details of CVE-2018-11294

The vulnerability in CVE-2018-11294 can be further understood through the following technical details:

Vulnerability Description

The issue arises from improper conditional logic used in comparing the maximum number of access categories, resulting in incomplete copying of WLAN handler indication information.

Affected Systems and Versions

Products: Android for MSM, Firefox OS for MSM, QRD Android
Vendor: Qualcomm, Inc.
Versions: All Android releases from CAF using the Linux kernel

Exploitation Mechanism

Exploiting this vulnerability would require knowledge of the specific flaw in the conditional logic used for WLAN handler indication processing.

Mitigation and Prevention

To address CVE-2018-11294 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Apply patches or updates provided by Qualcomm to fix the firmware issue.
Monitor vendor security bulletins for any related advisories or recommendations.

Long-Term Security Practices

Regularly update firmware and software to ensure the latest security patches are in place.
Implement network segmentation and access controls to minimize the impact of potential vulnerabilities.

Patching and Updates

Keep abreast of security updates from Qualcomm and apply them promptly to mitigate the risk of exploitation.