CVE-2022-35858 : Security Advisory and Response

This article provides details about CVE-2022-35858, a vulnerability in Samsung mTower 0.3.0 that allows a trusted application to trigger memory overwrite, denial of service, and information disclosure.

Understanding CVE-2022-35858

This CVE describes a vulnerability in Samsung mTower 0.3.0 that can be exploited by a trusted application to cause significant harm.

What is CVE-2022-35858?

The TEE_PopulateTransientObject and __utee_from_attr functions in Samsung mTower 0.3.0 allow a trusted application to trigger a memory overwrite, denial of service, and information disclosure by invoking the function TEE_PopulateTransientObject with a large number in the parameter attrCount.

The Impact of CVE-2022-35858

The vulnerability can lead to memory corruption, service disruption, and exposure of sensitive information, posing a significant risk to the security of affected systems.

Technical Details of CVE-2022-35858

Here are the technical details regarding the vulnerability in Samsung mTower 0.3.0.

Vulnerability Description

The issue arises from improper handling of input parameters in the TEE_PopulateTransientObject function, allowing an attacker to overwrite memory and potentially execute malicious code.

Affected Systems and Versions

Samsung mTower 0.3.0 is confirmed to be affected by this vulnerability, impacting systems that rely on this specific version.

Exploitation Mechanism

By invoking the TEE_PopulateTransientObject function with a large number in the attrCount parameter, a trusted application can exploit the vulnerability and carry out memory overwrite, denial of service, and information disclosure attacks.

Mitigation and Prevention

To address CVE-2022-35858 and enhance system security, consider the following mitigation strategies.

Immediate Steps to Take

Update Samsung mTower to the latest version that includes a patch for the vulnerability.
Monitor system logs and network traffic for any signs of exploitation.

Long-Term Security Practices

Implement secure coding practices and perform regular security audits of applications.
Educate developers and users about the importance of validating input parameters to prevent memory corruption vulnerabilities.

Patching and Updates

Stay informed about security updates released by Samsung for mTower and promptly apply patches to eliminate known vulnerabilities.