CVE-2020-14077 : Vulnerability Insights and Analysis

TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow vulnerability that allows an authenticated user to execute arbitrary code by exploiting a specific action.

Understanding CVE-2020-14077

This CVE involves a critical vulnerability in TRENDnet TEW-827DRU devices that could lead to unauthorized code execution.

What is CVE-2020-14077?

The vulnerability in the ssi binary of TRENDnet TEW-827DRU devices allows an authenticated user to trigger a stack-based buffer overflow by sending a specially crafted request.

The Impact of CVE-2020-14077

Exploiting this vulnerability could enable an attacker to execute arbitrary code on the affected device, potentially leading to complete compromise of the system.

Technical Details of CVE-2020-14077

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The stack-based buffer overflow occurs in the ssi binary of TRENDnet TEW-827DRU devices when an authenticated user sends a POST request to apply.cgi using a specific action with a long wps_sta_enrollee_pin key.

Affected Systems and Versions

Affected System: TRENDnet TEW-827DRU devices
Vulnerable Versions: Through 2.06B04

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user POSTing to apply.cgi via the action set_sta_enrollee_pin_wifi1 or set_sta_enrollee_pin_wifi0 with a sufficiently long wps_sta_enrollee_pin key.

Mitigation and Prevention

Protecting systems from CVE-2020-14077 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Implement strong authentication mechanisms.
Conduct regular security audits and assessments.

Patching and Updates

Check for security advisories from TRENDnet regarding CVE-2020-14077.
Apply recommended patches or updates to mitigate the vulnerability effectively.