CVE-2017-8251 Explained : Impact and Mitigation

CVE-2017-8251 pertains to a vulnerability in the Linux kernel used in Qualcomm products with Android releases from CAF. The issue arises from a lack of verification in specific functions, potentially leading to an array overflow.

Understanding CVE-2017-8251

This CVE involves a vulnerability in Qualcomm products utilizing the Linux kernel within Android releases from CAF.

What is CVE-2017-8251?

The vulnerability stems from inadequate verification in certain functions, specifically msm_isp_check_stream_cfg_cmd and msm_isp_stats_update_cgc_override, which could result in an array overflow.

The Impact of CVE-2017-8251

The lack of proper validation in the affected functions may allow attackers to trigger an overflow of the 'stream_cfg_cmd->stream_handle' array, potentially leading to a security breach or system compromise.

Technical Details of CVE-2017-8251

This section delves into the technical aspects of the CVE.

Vulnerability Description

The issue lies in the functions msm_isp_check_stream_cfg_cmd and msm_isp_stats_update_cgc_override within Qualcomm products using the Linux kernel. The variable 'stream_cfg_cmd->num_streams' is not adequately verified, posing a risk of array overflow.

Affected Systems and Versions

Affected Systems: Qualcomm products with Android releases from CAF
Affected Versions: Not specified

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to trigger an overflow of the 'stream_cfg_cmd->stream_handle' array, potentially leading to unauthorized access or system compromise.

Mitigation and Prevention

Protecting systems from CVE-2017-8251 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches or updates provided by Qualcomm promptly.
Monitor vendor communications for security advisories related to this vulnerability.

Long-Term Security Practices

Regularly update and patch all software and firmware on affected devices.
Implement network security measures to detect and prevent potential exploitation of vulnerabilities.

Patching and Updates

Ensure that all Qualcomm products with Android releases from CAF are updated with the latest patches and security fixes to mitigate the risk of exploitation.