CVE-2017-1000020 : What You Need to Know

A SYN Flood or FIN Flood attack in ECos 1 and other versions of embedded devices leads to a web Authentication Bypass.

Understanding CVE-2017-1000020

This CVE involves a vulnerability in eCos Embedded Web Servers that allows an attacker to bypass authentication through SYN Flood or FIN Flood attacks.

What is CVE-2017-1000020?

The occurrence of SYN Flood or FIN Flood attacks in eCos 1 and other embedded device versions enables an Authentication Bypass, granting unauthorized access to affected devices.

The Impact of CVE-2017-1000020

Attackers can exploit this bug to gain remote or local control over the affected device.
Certain versions of SOHO Routers produced by TOTOLINK, GREATEK, and other manufacturers are confirmed to be vulnerable.

Technical Details of CVE-2017-1000020

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

Vulnerability Description

SYN Flood or FIN Flood attacks in eCos Embedded Web Servers allow unauthorized access without authentication.

Affected Systems and Versions

ECos 1 and other versions of embedded devices are susceptible to this vulnerability.

Exploitation Mechanism

Attackers send SYN Flood or FIN Flood packets to the eCos Embedded Web Servers, which fail to validate or handle the packets, leading to an Authentication Bypass.

Mitigation and Prevention

Protecting systems from CVE-2017-1000020 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable unnecessary services on affected devices to reduce the attack surface.
Implement network-level protections such as firewalls to filter out malicious traffic.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Apply patches and updates provided by the device manufacturers to mitigate the vulnerability.