CVE-2023-28391 Explained : Impact and Mitigation

This article provides detailed information about CVE-2023-28391, a memory corruption vulnerability that affects Weston Embedded uC-HTTP v3.01.01, potentially allowing remote attackers to execute malicious code.

Understanding CVE-2023-28391

This section delves into the specifics of CVE-2023-28391, outlining the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-28391?

CVE-2023-28391 is a memory corruption vulnerability found in the HTTP Server header parsing functionality of Weston Embedded uC-HTTP v3.01.01. Attackers can exploit this flaw by sending specially crafted network packets to trigger code execution.

The Impact of CVE-2023-28391

The impact of CVE-2023-28391 is critical, with a CVSS base score of 9 and a base severity rating of "CRITICAL." The vulnerability can result in high confidentiality, integrity, and availability impacts, making it crucial to address promptly.

Technical Details of CVE-2023-28391

This section provides deeper insights into the technical aspects of CVE-2023-28391, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper restriction of operations within the bounds of a memory buffer (CWE-119), allowing attackers to manipulate network packets to execute arbitrary code.

Affected Systems and Versions

Vendor: Silicon Labs
Product: Gecko Platform
Version: 4.3.1.0 (affected)
Vendor: Weston Embedded
Product: Cesium NET
Version: 3.07.01 (affected)
Vendor: Weston Embedded
Product: uC-HTTP
Version: v3.01.01 (affected)

Exploitation Mechanism

By sending specially crafted network packets to the vulnerable HTTP Server header parsing functionality, attackers can exploit the memory corruption vulnerability, leading to unauthorized code execution.

Mitigation and Prevention

In response to CVE-2023-28391, it is vital for organizations and individuals to take immediate steps to mitigate the risk posed by this critical vulnerability.

Immediate Steps to Take

Apply security patches provided by the respective vendors promptly.
Implement network-level protections to filter out potentially malicious network packets.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct thorough security assessments and audits to identify and remediate potential weaknesses.

Patching and Updates

Stay informed about security advisories from software vendors and security researchers to apply patches and updates promptly, reducing the likelihood of successful exploitation of vulnerabilities like CVE-2023-28391.