CVE-2023-41102 : Vulnerability Insights and Analysis

An issue was discovered in the captive portal in OpenNDS before version 10.1.3, which has multiple memory leaks leading to a Denial-of-Service condition.

Understanding CVE-2023-41102

This CVE identifies a vulnerability in OpenNDS that could be exploited to cause a denial of service by exhausting available memory.

What is CVE-2023-41102?

The CVE-2023-41102 vulnerability exists in OpenNDS captive portal before version 10.1.3, primarily due to multiple memory leaks that could be abused by an attacker to consume all available memory, resulting in a Denial-of-Service condition.

The Impact of CVE-2023-41102

Exploiting this vulnerability could allow threat actors to disrupt services by overwhelming the target system's memory, causing a denial of service. This may lead to downtime and potential disruption of critical operations.

Technical Details of CVE-2023-41102

This section delves into the specific technical aspects of the CVE, including its vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The captive portal in OpenNDS prior to version 10.1.3 contains multiple memory leaks, leaving allocated memory unreleased. This oversight can be leveraged by malicious entities to exhaust system memory, resulting in a Denial-of-Service scenario.

Affected Systems and Versions

The vulnerability impacts OpenNDS captive portal versions before 10.1.3. Systems with outdated OpenNDS installations are at risk of falling victim to this memory exhaustion flaw.

Exploitation Mechanism

Malicious actors can exploit the memory leaks in OpenNDS captive portal to trigger a DoS attack, overwhelming the system's memory resources and rendering it unresponsive.

Mitigation and Prevention

To safeguard systems against CVE-2023-41102 and prevent potential Denial-of-Service incidents, immediate action and long-term security practices are essential.

Immediate Steps to Take

Upgrade OpenNDS captive portal to version 10.1.3 or higher to mitigate the memory leak vulnerabilities.
Monitor system memory usage closely to detect any unusual spikes or abnormalities indicating a DoS attempt.

Long-Term Security Practices

Implement regular security updates and patches for OpenNDS to address any emerging vulnerabilities promptly.
Conduct routine security audits and assessments to identify and remediate any memory-related issues that could lead to a DoS attack.

Patching and Updates

Stay informed about OpenNDS security advisories and apply patches as soon as they are released to ensure your systems are protected against known vulnerabilities.