CVE-2023-21263 : Security Advisory and Response

This CVE record was assigned by google_android and was published on December 4, 2023. It involves an elevation of privilege vulnerability in Google's Android platform.

Understanding CVE-2023-21263

This section delves into the details of CVE-2023-21263, outlining the vulnerability and its impact.

What is CVE-2023-21263?

CVE-2023-21263 specifically pertains to a vulnerability in OSMMapPMRGeneric of pmr_os.c in Android. The flaw could result in an out-of-bounds write due to an uncaught exception, potentially leading to local escalation of privilege within the kernel. Importantly, no additional execution privileges are necessary for an attacker to exploit this vulnerability, and it does not require user interaction.

The Impact of CVE-2023-21263

The impact of this vulnerability is significant as it could allow a malicious actor to escalate their privileges locally within the Android kernel. This could potentially lead to further exploitation and compromise of the system.

Technical Details of CVE-2023-21263

In this section, we'll dive deeper into the technical aspects of CVE-2023-21263, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in OSMMapPMRGeneric of pmr_os.c poses a risk of out-of-bounds write due to an uncaught exception. This flaw creates a pathway for attackers to elevate their privileges locally within the kernel.

Affected Systems and Versions

Google's Android platform, specifically the Android SoC version, is affected by CVE-2023-21263. Other versions may also be impacted, so it is crucial to stay informed about updates and patches.

Exploitation Mechanism

Exploiting this vulnerability does not require additional execution privileges or user interaction. Attackers can potentially leverage this flaw to escalate their privileges within the Android kernel.

Mitigation and Prevention

In this final section, we outline the steps to mitigate and prevent exploitation of CVE-2023-21263, including immediate actions to take and long-term security practices to implement.

Immediate Steps to Take

To address CVE-2023-21263, it is recommended to apply patches and updates provided by Google as soon as they are available. This can help mitigate the risk of exploitation by malicious actors targeting this vulnerability.

Long-Term Security Practices

In the long term, adopting robust security practices such as regular security audits, restricting system access, and staying informed about potential vulnerabilities can enhance the overall security posture of Android devices.

Patching and Updates

Regularly checking for security updates and patches from Google is crucial to safeguard against vulnerabilities like CVE-2023-21263. Timely application of patches can help ensure that known security issues are addressed promptly, reducing the risk of exploitation.