CVE-2023-21085 : What You Need to Know

This CVE record was published on April 19, 2023, by Google Android. The vulnerability involves a possible out-of-bounds write in nci_snd_set_routing_cmd of nci_hmsgs.cc, which could potentially lead to remote code execution without requiring any additional execution privileges. User interaction is not needed for exploitation.

Understanding CVE-2023-21085

This section delves into the details of CVE-2023-21085, shedding light on the vulnerability's nature and impact.

What is CVE-2023-21085?

CVE-2023-21085 is a vulnerability identified in the Android operating system. It specifically resides in the nci_snd_set_routing_cmd function of nci_hmsgs.cc. The issue arises due to a missing bounds check, which opens up the possibility of an out-of-bounds write.

The Impact of CVE-2023-21085

The impact of CVE-2023-21085 is significant as it could allow an attacker to execute code remotely, with the potential for proximal or adjacent exploitation. This type of attack can pose serious security risks to affected systems.

Technical Details of CVE-2023-21085

Here, we delve deeper into the technical aspects of CVE-2023-21085, exploring the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in nci_snd_set_routing_cmd of nci_hmsgs.cc is attributed to a missing bounds check, which can result in an out-of-bounds write. This could be leveraged by malicious actors to execute code remotely.

Affected Systems and Versions

The affected product is Android, with specific versions including Android-11, Android-12, Android-12L, and Android-13. These versions are confirmed to be impacted by the vulnerability.

Exploitation Mechanism

Exploiting the CVE-2023-21085 vulnerability does not require any user interaction. An attacker could potentially trigger remote code execution through the identified out-of-bounds write issue.

Mitigation and Prevention

In this section, we outline the steps to mitigate the risks associated with CVE-2023-21085 and prevent potential exploitation.

Immediate Steps to Take

To address CVE-2023-21085, it is crucial to apply security patches and updates promptly. Additionally, organizations should enhance monitoring and detection capabilities to identify any suspicious activities related to the vulnerability.

Long-Term Security Practices

Implementing robust security practices, such as conducting regular security assessments, educating users on safe computing practices, and maintaining secure coding standards, can help bolster the overall security posture and reduce the likelihood of similar vulnerabilities in the future.

Patching and Updates

It is recommended to stay vigilant for security advisories and updates from the Android security bulletin to promptly address vulnerabilities like CVE-2023-21085. Regularly applying patches and updates is essential to ensure the protection of systems and data from potential exploits.