CVE-2021-45734 : Exploit Details and Defense Strategies

TOTOLINK X5000R v9.1.0u.6118_B20201102 was discovered to contain a stack overflow vulnerability in the function setUrlFilterRules, allowing attackers to execute a Denial of Service (DoS) attack through the url parameter.

Understanding CVE-2021-45734

The following details provide insights into CVE-2021-45734.

What is CVE-2021-45734?

This CVE identifies a stack overflow vulnerability in TOTOLINK X5000R v9.1.0u.6118_B20201102 that permits attackers to conduct a Denial of Service (DoS) attack by manipulating the url parameter.

The Impact of CVE-2021-45734

The vulnerability could result in a Denial of Service (DoS) attack, leading to disrupted services for legitimate users of the affected product.

Technical Details of CVE-2021-45734

Explore the technical aspects associated with CVE-2021-45734.

Vulnerability Description

The vulnerability lies in the function setUrlFilterRules of TOTOLINK X5000R v9.1.0u.6118_B20201102, exposing the product to a stack overflow issue.

Affected Systems and Versions

Affected Product: TOTOLINK X5000R v9.1.0u.6118_B20201102
Affected Version: N/A

Exploitation Mechanism

Attackers can exploit the vulnerability in the function setUrlFilterRules by crafting malicious URL requests, triggering a stack overflow and initiating a DoS attack.

Mitigation and Prevention

Discover the steps to mitigate the CVE-2021-45734 vulnerability.

Immediate Steps to Take

Apply security patches provided by the vendor to address the vulnerability promptly.
Implement network-level protections to shield against DoS attacks targeting the url parameter.

Long-Term Security Practices

Regularly update and patch the firmware or software of the affected product to prevent vulnerabilities.
Conduct security assessments and audits to detect and rectify potential weaknesses proactively.

Patching and Updates

Keep abreast of security advisories from the vendor and promptly apply patches to secure the system against potential exploits.