CVE-2017-14436 Explained : Impact and Mitigation

CVE-2017-14436, published on April 13, 2018, addresses a denial of service vulnerability in Moxa EDR-810 V4.1 build 17030317.

Understanding CVE-2017-14436

This CVE entry describes a specific vulnerability in the web server function of Moxa EDR-810 V4.1 build 17030317 that can be exploited for denial of service attacks.

What is CVE-2017-14436?

The vulnerability in Moxa EDR-810 V4.1 build 17030317 allows attackers to trigger a null pointer dereference by sending a specially crafted HTTP URI, leading to a denial of service.

The Impact of CVE-2017-14436

The impact of this vulnerability is rated as HIGH with a CVSS base score of 7.5. It can result in a denial of service attack on the affected system.

Technical Details of CVE-2017-14436

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the web server function of Moxa EDR-810 V4.1 build 17030317 can be exploited by sending a GET request to "/MOXA_CFG2.ini" without a cookie header, causing a null pointer dereference.

Affected Systems and Versions

Product: Moxa
Vendor: Talos
Version: Moxa EDR-810 V4.1 build 17030317

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
Availability Impact: High

Mitigation and Prevention

Protecting systems from CVE-2017-14436 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Implement network-level protections to filter out malicious HTTP requests.
Monitor network traffic for any suspicious activity targeting the vulnerability.

Long-Term Security Practices

Regularly update and patch all software and firmware on the affected systems.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories from vendors and security researchers.
Continuously monitor for patches or mitigations released by the vendor to address the vulnerability.