CVE-2023-21153 : Security Advisory and Response

This CVE record was published on June 28, 2023, by Google Android. It involves a vulnerability in Do_AIMS_SET_CALL_WAITING of imsservice.cpp, which could potentially lead to a local escalation of privilege on Android devices.

Understanding CVE-2023-21153

This section will delve into the details of CVE-2023-21153, covering what the vulnerability entails and its potential impact.

What is CVE-2023-21153?

CVE-2023-21153 is a vulnerability found in Do_AIMS_SET_CALL_WAITING of imsservice.cpp, where a missing bounds check could result in an out-of-bounds read. This vulnerability has the potential to be exploited for local privilege escalation, requiring System execution privileges without the need for user interaction.

The Impact of CVE-2023-21153

The impact of CVE-2023-21153 lies in the ability for malicious actors to elevate their privileges locally on the affected Android devices. This could lead to unauthorized access and control over the system, posing a significant security risk.

Technical Details of CVE-2023-21153

In this section, we will explore the technical aspects of CVE-2023-21153, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Do_AIMS_SET_CALL_WAITING of imsservice.cpp is characterized by a missing bounds check, enabling an out-of-bounds read. This flaw creates an avenue for attackers to exploit the system and escalate their privileges locally.

Affected Systems and Versions

The vulnerability impacts Android devices running the Android kernel. Specifically, the Android kernel version is affected by this flaw, highlighting the potential exposure across a range of devices utilizing this version.

Exploitation Mechanism

Exploiting CVE-2023-21153 requires no user interaction as it involves a missing bounds check within the specified component. By leveraging this vulnerability, threat actors can execute privileged escalation attacks to gain unauthorized control over the affected Android system.

Mitigation and Prevention

Mitigating CVE-2023-21153 is crucial to safeguard Android devices from potential exploitation. Here, we outline immediate steps to take, long-term security practices, and the importance of timely patching and updates.

Immediate Steps to Take

To mitigate the risk posed by CVE-2023-21153, users should closely monitor security bulletins and updates from Google Android. Implementing access controls, maintaining secure configurations, and staying informed about security patches are essential immediate steps to enhance system protection.

Long-Term Security Practices

Implementing robust security practices such as regular security assessments, conducting penetration testing, and fostering a culture of security awareness can fortify the defense posture of Android devices against potential vulnerabilities like CVE-2023-21153.

Patching and Updates

Timely installation of security patches and updates released by Google Android is critical to address CVE-2023-21153 and other security vulnerabilities. By staying current with software updates, users can effectively mitigate risks and enhance the overall security resilience of their devices.