CVE-2022-35261 Explained : Impact and Mitigation

A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. This vulnerability can be triggered by a specially-crafted network request, allowing an attacker to cause a denial of service by sending a sequence of requests to the

/action/import_authorized_keys/

API.

Understanding CVE-2022-35261

This section delves into the details of the CVE-2022-35261 vulnerability, including its impact and technical aspects.

What is CVE-2022-35261?

CVE-2022-35261 is a denial of service vulnerability present in the web_server hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. It allows an attacker to exploit a specially-crafted network request to trigger denial of service.

The Impact of CVE-2022-35261

The vulnerability poses a medium risk with a CVSS base score of 4.9. An attacker with high privileges can exploit this vulnerability to cause a denial of service, affecting the availability of the affected systems.

Technical Details of CVE-2022-35261

This section provides an in-depth look at the technical aspects of CVE-2022-35261, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

CVE-2022-35261 is classified as a denial of service vulnerability that can be triggered by a specially-crafted network request to the hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. By sending a sequence of requests to the

/action/import_authorized_keys/

API, an attacker can disrupt the normal operation of the system.

Affected Systems and Versions

The vulnerability affects Robustel R1510 versions 3.1.16 and 3.3.0. Systems running these versions are vulnerable to exploitation via the described attack vector.

Exploitation Mechanism

An attacker can exploit CVE-2022-35261 by sending a series of specially-crafted network requests to the vulnerable

/action/import_authorized_keys/

API. This can lead to a denial of service condition on the targeted system.

Mitigation and Prevention

In light of the CVE-2022-35261 vulnerability, it is crucial to take immediate steps to mitigate the risk and prevent potential security incidents.

Immediate Steps to Take

Ensure that the affected Robustel R1510 systems are updated to a non-vulnerable version. Implement network monitoring and filtering to detect and block malicious requests targeting the vulnerable API endpoint.

Long-Term Security Practices

Adopt a proactive approach to security by conducting regular vulnerability assessments and penetration testing. Stay informed about security advisories related to the products and technologies used in your environment.

Patching and Updates

Regularly check for security updates and patches released by Robustel for the R1510 series. Promptly apply patches to eliminate known vulnerabilities and enhance the overall security posture of the systems.