CVE-2018-17022 : Vulnerability Insights and Analysis

A vulnerability involving a stack-based buffer overflow has been discovered in the ASUS GT-AC5300 router up to version 3.0.0.4.384_32738. This flaw can be exploited by remote attackers to achieve a denial of service (device crash) or potentially cause other unspecified consequences. The vulnerability occurs when an excessively long sh_path0 value is set, followed by sending a request for appGet.cgi?hook=select_list("Storage_x_SharedPath"). The issue arises from the usage of strcpy in the ej_select_list function within the router's web.c file.

Understanding CVE-2018-17022

This CVE identifier refers to a specific vulnerability found in the ASUS GT-AC5300 router.

What is CVE-2018-17022?

The CVE-2018-17022 vulnerability is a stack-based buffer overflow in the ASUS GT-AC5300 router that allows remote attackers to trigger a denial of service or potentially cause other adverse effects.

The Impact of CVE-2018-17022

Remote attackers can exploit this vulnerability to crash the device or potentially execute other malicious actions.

Technical Details of CVE-2018-17022

The technical aspects of the vulnerability are crucial for understanding its implications.

Vulnerability Description

The vulnerability involves a stack-based buffer overflow in the ASUS GT-AC5300 router up to version 3.0.0.4.384_32738.

Affected Systems and Versions

ASUS GT-AC5300 router up to version 3.0.0.4.384_32738.

Exploitation Mechanism

Attackers can exploit the flaw by setting an excessively long sh_path0 value and sending a specific request.

Mitigation and Prevention

Protecting systems from CVE-2018-17022 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the ASUS GT-AC5300 router to the latest firmware version.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update all network devices and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.
Educate users and administrators about safe browsing habits and cybersecurity best practices.

Patching and Updates

Apply patches and updates provided by ASUS for the GT-AC5300 router to mitigate the vulnerability.