CVE-2018-11262 : Vulnerability Insights and Analysis

Android for MSM, Firefox OS for MSM, and QRD Android by Qualcomm, Inc. are affected by a vulnerability that can lead to an out-of-bounds write during the GPT patching process.

Understanding CVE-2018-11262

This CVE involves an incorrect calculation of buffer size in the boot process, potentially resulting in a compromise of the GPT patching process.

What is CVE-2018-11262?

When attempting to determine the total number of partitions in Android for MSM, Firefox OS for MSM, and QRD Android with all Android releases from CAF using the Linux kernel, an issue arises. The 'TotalPart' exceeding 'GptHeader->MaxPtCnt' can trigger an out-of-bounds write, compromising the GPT patching process.

The Impact of CVE-2018-11262

This vulnerability can be exploited to perform unauthorized out-of-bounds writes, potentially leading to a compromise of the GPT patching process and system integrity.

Technical Details of CVE-2018-11262

The technical aspects of this CVE include:

Vulnerability Description

The vulnerability stems from an incorrect calculation of buffer size in the boot process, allowing for out-of-bounds writes.

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

The issue occurs when the 'TotalPart' value exceeds the 'GptHeader->MaxPtCnt', triggering the out-of-bounds write and compromising the GPT patching process.

Mitigation and Prevention

To address CVE-2018-11262, consider the following steps:

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor vendor communications for updates and security advisories.
Implement least privilege access controls to limit potential damage.

Long-Term Security Practices

Regularly update and patch all software and firmware components.
Conduct security assessments and audits to identify vulnerabilities.
Educate users on safe computing practices to prevent exploitation.

Patching and Updates

Ensure all systems are updated with the latest patches from Qualcomm, Inc.
Regularly check for security bulletins and advisories from the vendor for any new information or updates.