CVE-2023-21181 Explained : Impact and Mitigation

This CVE record involves a potential out of bounds read vulnerability in the

btm_ble_update_inq_result

function of

btm_ble_gap.cc

in Android. The exploit could result in a heap buffer overflow, leading to local information disclosure. It's important to address this vulnerability promptly to prevent potential security risks.

Understanding CVE-2023-21181

This section will delve into the specifics of CVE-2023-21181, covering what it entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-21181?

CVE-2023-21181 is a vulnerability in Android's

btm_ble_update_inq_result

function within

btm_ble_gap.cc

. The issue stems from a possible out of bounds read, which could trigger a heap buffer overflow. Successful exploitation could allow an attacker to disclose local information, requiring system execution privileges but no user interaction.

The Impact of CVE-2023-21181

The impact of this vulnerability lies in the potential for local information disclosure, which could compromise the security and privacy of affected systems. Understanding the severity and consequences of this exploit is crucial in implementing effective mitigation measures.

Technical Details of CVE-2023-21181

Exploring the technical aspects of CVE-2023-21181 provides insight into the vulnerability, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in

btm_ble_update_inq_result

can result in a heap buffer overflow due to a possible out of bounds read, posing a risk of local information disclosure. Understanding how this weakness can be exploited is essential for devising effective security measures.

Affected Systems and Versions

The issue impacts the Android operating system, specifically version Android-13. Systems running this version are susceptible to the vulnerability and should take appropriate actions to mitigate potential risks.

Exploitation Mechanism

Successful exploitation of CVE-2023-21181 could allow threat actors to trigger a heap buffer overflow, compromising system integrity and potentially leading to local information disclosure. Awareness of how attackers can leverage this vulnerability is crucial for proactive defense strategies.

Mitigation and Prevention

Addressing CVE-2023-21181 requires a proactive approach to mitigate the risk of local information disclosure and protect system integrity. Implementing immediate steps, adopting long-term security practices, and staying current with patches and updates are key mitigation strategies.

Immediate Steps to Take

System administrators and users are advised to apply relevant security updates provided by the vendor promptly. Additionally, monitoring system activity for any signs of exploitation and restricting access to vulnerable components can help prevent unauthorized disclosure of information.

Long-Term Security Practices

Incorporating robust security practices, such as regular security audits, implementing the principle of least privilege, and maintaining awareness of emerging threats, is essential for safeguarding systems against potential vulnerabilities like CVE-2023-21181.

Patching and Updates

Staying informed about security bulletins and patches released by vendors, such as Android's security bulletin, is crucial for addressing known vulnerabilities and enhancing system security. Timely patching and updating of systems can significantly reduce the risk of exploitation and information disclosure.