CVE-2019-1010293 : Security Advisory and Response

OP-TEE versions before 3.3.0, including 3.3.0, are vulnerable to boundary crossing, leading to memory corruption within the TEE. The optee_os component is affected. Updating to version 3.4.0 or later is recommended.

Understanding CVE-2019-1010293

This CVE identifies a vulnerability in OP-TEE versions prior to 3.3.0 that can result in memory corruption due to boundary crossing within the Trusted Execution Environment (TEE).

What is CVE-2019-1010293?

The vulnerability, known as boundary crossing, impacts OP-TEE versions before 3.3.0, including 3.3.0.
It leads to memory corruption within the TEE, specifically affecting the optee_os component.

The Impact of CVE-2019-1010293

Memory corruption within the TEE itself is the primary impact of this vulnerability.

Technical Details of CVE-2019-1010293

OP-TEE versions before 3.3.0, including 3.3.0, are susceptible to the following:

Vulnerability Description

Boundary crossing vulnerability leading to memory corruption in the TEE.

Affected Systems and Versions

Product: OP-TEE
Vendor: Linaro/OP-TEE
Versions affected: 3.3.0 and earlier
Fixed version: 3.4.0 and later

Exploitation Mechanism

The vulnerability allows for boundary crossing, resulting in memory corruption within the TEE.

Mitigation and Prevention

To address CVE-2019-1010293, consider the following steps:

Immediate Steps to Take

Update OP-TEE to version 3.4.0 or any subsequent release.

Long-Term Security Practices

Regularly monitor for security updates and patches for OP-TEE.

Patching and Updates

Apply patches promptly to ensure the security of the TEE component.