CVE-2023-1009 : Exploit Details and Defense Strategies

This CVE-2023-1009 details a critical vulnerability found in the DrayTek Vigor 2960 Web Management Interface. It involves a path traversal issue in versions 1.5.1.4 and 1.5.1.5 of the product, affecting the function sub_1DF14 of the file /cgi-bin/mainfunction.cgi. The vulnerability allows for remote attacks by manipulating the input argument option.

Understanding CVE-2023-1009

This section delves into the specifics of CVE-2023-1009, exploring the nature and impact of the vulnerability.

What is CVE-2023-1009?

The vulnerability identified as CVE-2023-1009 is classified as critical and affects the DrayTek Vigor 2960 in versions 1.5.1.4 and 1.5.1.5. It resides in the Web Management Interface component, particularly in the function sub_1DF14 of the file /cgi-bin/mainfunction.cgi. By manipulating the option argument with the input /../etc/passwd-, a path traversal exploit can be launched remotely. It's essential to note that this vulnerability only impacts products that are no longer maintained by the vendor.

The Impact of CVE-2023-1009

The impact of CVE-2023-1009 is significant, as it allows attackers to perform unauthorized path traversal, potentially accessing sensitive system files. This could lead to unauthorized data disclosure and other security risks for affected systems.

Technical Details of CVE-2023-1009

In this section, we will explore the technical details surrounding CVE-2023-1009, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in DrayTek Vigor 2960 versions 1.5.1.4 and 1.5.1.5 enables path traversal through the Web Management Interface's function sub_1DF14. Attackers can exploit this by manipulating the input argument, potentially leading to unauthorized access to sensitive files.

Affected Systems and Versions

The impacted system is the DrayTek Vigor 2960 in versions 1.5.1.4 and 1.5.1.5. Users utilizing these versions may be vulnerable to the path traversal exploit present in the Web Management Interface component.

Exploitation Mechanism

The exploitation of CVE-2023-1009 involves remote attackers manipulating the option argument with specific input, allowing them to traverse the file system paths and potentially gain unauthorized access to critical system files.

Mitigation and Prevention

To address CVE-2023-1009 and prevent potential exploitation, certain steps and security practices are recommended.

Immediate Steps to Take

Users of DrayTek Vigor 2960 versions 1.5.1.4 and 1.5.1.5 should apply immediate mitigation measures, such as restricting network access, implementing firewall rules, and monitoring for any suspicious activity that may indicate an exploit attempt.

Long-Term Security Practices

In the long term, ensuring systems are regularly patched and updated, implementing network segmentation, employing robust access controls, and conducting regular security audits can enhance overall security posture and prevent similar vulnerabilities.

Patching and Updates

Vendor support for affected versions may no longer be available; however, users are advised to seek alternative solutions, such as firmware updates from trusted sources or employing additional security measures to mitigate the risk posed by CVE-2023-1009.