CVE-2017-18320 : What You Need to Know

An attempt to unload QSEE on a third-party TEE without prior loading leads to a data abort in Snapdragon Automobile and Snapdragon Mobile versions MSM8996AU, SD 410/12, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 615/16/SD 415, SD 625, SD 632, SD 636, SD 650/52, SD 712 / SD 710 / SD 670, SD 810, SD 820, SD 820A, SD 835, SDA660, SDM439, SDM630, SDM660, SDX24, Snapdragon_High_Med_2016, SXR1130.

Understanding CVE-2017-18320

This CVE involves an improper input validation issue in Qualcomm's Snapdragon Automobile and Snapdragon Mobile devices.

What is CVE-2017-18320?

CVE-2017-18320 is a vulnerability that occurs when attempting to unload QSEE on a third-party Trusted Execution Environment (TEE) without prior loading, resulting in a data abort in various Snapdragon Automobile and Snapdragon Mobile versions.

The Impact of CVE-2017-18320

The vulnerability could allow attackers to trigger a data abort, potentially leading to denial of service or other security compromises on affected devices.

Technical Details of CVE-2017-18320

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability stems from improper input validation in the Trusted Zone (TZ) of Qualcomm's Snapdragon Automobile and Snapdragon Mobile devices.

Affected Systems and Versions

Products: Snapdragon Automobile, Snapdragon Mobile
Vendor: Qualcomm, Inc.
Versions: MSM8996AU, SD 410/12, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 615/16/SD 415, SD 625, SD 632, SD 636, SD 650/52, SD 712 / SD 710 / SD 670, SD 810, SD 820, SD 820A, SD 835, SDA660, SDM439, SDM630, SDM660, SDX24, Snapdragon_High_Med_2016, SXR1130

Exploitation Mechanism

The vulnerability can be exploited by attempting to unload Qualcomm Secure Execution Environment (QSEE) on a third-party TEE without prior loading, leading to a data abort.

Mitigation and Prevention

Protecting systems from CVE-2017-18320 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Qualcomm promptly.
Monitor official sources for updates and security advisories.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement proper input validation mechanisms in TEE environments.

Patching and Updates

Stay informed about security bulletins and patches released by Qualcomm.
Ensure timely installation of security updates to mitigate the risk of exploitation.