CVE-2023-5055 : What You Need to Know

This CVE record was published by Zephyr on November 21, 2023, and it involves a possible stack-based buffer overflow in the function

le_ecred_reconf_req()

in Zephyr versions less than or equal to 3.4. The vulnerability is considered to have a high severity level with a CVSS base score of 8.3.

Understanding CVE-2023-5055

This section will cover the details surrounding CVE-2023-5055, including what the vulnerability entails and its potential impacts.

What is CVE-2023-5055?

CVE-2023-5055 refers to a possible stack-based buffer overflow present in the function

le_ecred_reconf_req()

within Zephyr versions less than or equal to 3.4. This vulnerability could allow attackers to potentially execute malicious code or crash the application.

The Impact of CVE-2023-5055

The impact of CVE-2023-5055 is categorized as high severity, with a CVSS base score of 8.3. The vulnerability could lead to high availability and integrity impacts, potentially allowing unauthorized actors to exploit the system.

Technical Details of CVE-2023-5055

In this section, we will delve into the technical aspects of CVE-2023-5055, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in CVE-2023-5055 involves a possible stack-based buffer overflow condition in the function

le_ecred_reconf_req()

of Zephyr versions less than or equal to 3.4. This type of overflow occurs when the buffer being overwritten is allocated on the stack.

Affected Systems and Versions

Zephyr versions less than or equal to 3.4 are affected by CVE-2023-5055. Users operating on these versions should take immediate action to mitigate the risk posed by this vulnerability.

Exploitation Mechanism

The exploitation of CVE-2023-5055 could potentially allow threat actors to exploit the buffer overflow in the

le_ecred_reconf_req()

function to execute arbitrary code or disrupt the normal operation of the application.

Mitigation and Prevention

Mitigating and preventing vulnerabilities like CVE-2023-5055 is crucial to maintaining the security of systems and data. Here are some steps that can be taken to address this issue:

Immediate Steps to Take

Users should update Zephyr to a version that includes a patch for CVE-2023-5055.
Implement proper input validation mechanisms to prevent buffer overflow attacks.

Long-Term Security Practices

Regularly monitor and update software to ensure that known vulnerabilities are patched promptly.
Conduct security assessments and audits to identify and address potential weaknesses in the system.

Patching and Updates

Stay informed about security advisories and updates from Zephyr to apply patches promptly.
Keep abreast of best practices in secure coding and system hardening to minimize the risk of buffer overflow vulnerabilities.