CVE-2023-6265 : What You Need to Know

This CVE record details a vulnerability impacting the DrayTek Vigor2960 routers in versions 1.5.1.4 and 1.5.1.5, where an authenticated attacker can exploit directory traversal via the mainfunction.cgi dumpSyslog 'option' parameter, potentially leading to the deletion of arbitrary files. It is important to note that the affected product, Vigor2960, is no longer supported by the vendor.

Understanding CVE-2023-6265

This section delves into the crucial aspects of CVE-2023-6265, shedding light on the vulnerability's nature and its potential impact.

What is CVE-2023-6265?

CVE-2023-6265 involves a vulnerability in DrayTek Vigor2960 routers, specifically in versions 1.5.1.4 and 1.5.1.5, that allows an authenticated attacker to perform directory traversal via the mainfunction.cgi dumpSyslog 'option' parameter. This could enable the attacker to delete arbitrary files through the web management interface.

The Impact of CVE-2023-6265

The impact of this vulnerability is significant as it poses a high availability impact with a base severity rated as medium. With a CVSS v3.1 base score of 6.5, the exploitation of this vulnerability could potentially lead to the unauthorized deletion of files by malicious actors.

Technical Details of CVE-2023-6265

Exploring the vulnerability in more technical detail to understand its characteristics and implications.

Vulnerability Description

The vulnerability, identified as a CWE-22 Path Traversal, allows an attacker with authenticated access to exploit directory traversal capabilities through the mainfunction.cgi dumpSyslog 'option' parameter, facilitating the deletion of arbitrary files.

Affected Systems and Versions

DrayTek Vigor2960 routers in versions 1.5.1.4 and 1.5.1.5 are confirmed to be affected by this vulnerability. Users utilizing these specific versions are at risk if proper mitigation measures are not implemented promptly.

Exploitation Mechanism

The exploitation of CVE-2023-6265 involves an authenticated attacker leveraging the mainfunction.cgi dumpSyslog 'option' parameter to navigate the directory structure improperly, potentially leading to the deletion of unauthorized files.

Mitigation and Prevention

Understanding the necessary steps to mitigate and prevent the exploitation of CVE-2023-6265 is crucial to ensuring the security of impacted systems and data.

Immediate Steps to Take

Users of DrayTek Vigor2960 routers in affected versions should immediately restrict access to the web management interface and apply relevant security controls to limit the exploitation of the directory traversal vulnerability.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, timely software updates, and continuous monitoring to prevent similar vulnerabilities from being exploited in the future.

Patching and Updates

Given the unsupported nature of the affected product, it is recommended to consider alternative router solutions and prioritize the migration to supported and updated devices to mitigate security risks effectively.