CVE-2019-1010294 : Exploit Details and Defense Strategies

Linaro/OP-TEE prior to version 3.3.0 may have a rounding error leading to potential exposure of code and data from a previous Trusted Application. The issue has been resolved in version 3.4.0 and later.

Understanding CVE-2019-1010294

Versions of Linaro/OP-TEE prior to 3.3.0 may encounter a rounding error, potentially exposing code and data from a previous Trusted Application. The affected component is optee_os.

What is CVE-2019-1010294?

CVE-2019-1010294 is a vulnerability in Linaro/OP-TEE versions before 3.3.0 that could result in a rounding error, potentially leading to the exposure of code and data from a previous Trusted Application.

The Impact of CVE-2019-1010294

The vulnerability in Linaro/OP-TEE could allow for the leakage of code and data from a previous Trusted Application due to a rounding error. This could pose a risk to the confidentiality and integrity of the system.

Technical Details of CVE-2019-1010294

Versions of Linaro/OP-TEE prior to 3.3.0 are affected by a rounding error that could have the following implications:

Vulnerability Description

Rounding error in Linaro/OP-TEE versions before 3.3.0
Potential exposure of code and data from a previous Trusted Application

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 arises due to a rounding error in the optee_os component of Linaro/OP-TEE, allowing unauthorized access to code and data from a previous Trusted Application.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-1010294:

Immediate Steps to Take

Update Linaro/OP-TEE to version 3.4.0 or later to mitigate the vulnerability
Monitor and restrict access to Trusted Applications to prevent unauthorized exposure

Long-Term Security Practices

Regularly update and patch software components to address known vulnerabilities
Implement secure coding practices to minimize the risk of similar issues in the future

Patching and Updates

Apply patches and updates provided by Linaro/OP-TEE to ensure the security of the system