CVE-2023-33886 Explained : Impact and Mitigation

This article provides an overview of CVE-2023-33886, detailing the vulnerability, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-33886

CVE-2023-33886 is a vulnerability identified in Unisoc (Shanghai) Technologies Co., Ltd. telephony service software, potentially leading to local information disclosure without needing additional execution privileges.

What is CVE-2023-33886?

The vulnerability involves a missing permission check in the telephony service of Unisoc products, allowing unauthorized access to local information on the affected devices running Android10, Android11, Android12, and Android13.

The Impact of CVE-2023-33886

The impact of this vulnerability is the potential disclosure of sensitive local information, posing a risk to user privacy and data security on affected devices.

Technical Details of CVE-2023-33886

A deeper dive into the vulnerability reveals:

Vulnerability Description

The missing permission check in the telephony service of Unisoc products exposes local information, opening avenues for unauthorized access.

Affected Systems and Versions

The vulnerability affects devices running Unisoc products SC9863A, SC9832E, SC7731E, T610, T310, T606, T760, T610, T618, T606, T612, T616, T760, T770, T820, and S8000, operating on Android10, Android11, Android12, and Android13.

Exploitation Mechanism

Exploiting this vulnerability requires local access to the device, enabling unauthorized parties to retrieve sensitive information without additional execution privileges.

Mitigation and Prevention

To address CVE-2023-33886, the following steps are recommended:

Immediate Steps to Take

Update the Unisoc products to patched versions promptly to mitigate the vulnerability.
Limit physical access to the devices to prevent unauthorized disclosure of local information.

Long-Term Security Practices

Regularly update devices with the latest security patches to address potential vulnerabilities.
Implement access controls and permissions to restrict information access to authorized users only.

Patching and Updates

Stay informed about security updates and patches provided by Unisoc for their products to ensure the continuous protection of devices against known vulnerabilities.