CVE-2017-17766 Explained : Impact and Mitigation
Learn about CVE-2017-17766, an integer overflow vulnerability in Android for MSM, Firefox OS, and QRD Android, potentially leading to a buffer overflow. Find out how to mitigate this security risk.
Android for MSM, Firefox OS for MSM, and QRD Android prior to 2017-10-03 are affected by an integer overflow vulnerability leading to a potential buffer overflow.
Understanding CVE-2017-17766
This CVE involves a lack of validation in a specific function, potentially resulting in a critical security issue.
What is CVE-2017-17766?
The function wma_peer_info_event_handler() in Android for MSM, Firefox OS for MSM, and QRD Android before 2017-10-03 fails to properly validate the num_peers value received from firmware. This oversight can trigger an integer overflow vulnerability during buffer size allocation, opening the door to a buffer overflow scenario.
The Impact of CVE-2017-17766
The lack of validation in the affected function can lead to a critical security risk, potentially allowing attackers to exploit the vulnerability for malicious purposes.
Technical Details of CVE-2017-17766
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability stems from inadequate validation of the num_peers value, which can result in an integer overflow during buffer size allocation, potentially leading to a buffer overflow.
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 can be exploited by manipulating the num_peers value received from firmware to trigger an integer overflow, potentially causing a buffer overflow.
Mitigation and Prevention
Protecting systems from CVE-2017-17766 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by Qualcomm or relevant vendors to address the vulnerability.
- Monitor security bulletins and advisories for any new information or patches related to this CVE.
Long-Term Security Practices
- Implement secure coding practices to prevent similar vulnerabilities in the future.
- Conduct regular security assessments and audits to identify and mitigate potential risks.
Patching and Updates
- Ensure that all systems running the affected versions are updated with the latest patches to mitigate the vulnerability.