CVE-2024-21875 in Hacker Hotel Badge 2024
Summary
by MITRE • 02/11/2024
Allocation of Resources Without Limits or Throttling vulnerability in Badge leading to a denial of service attack.Team Hacker Hotel Badge 2024 on risc-v (billboard modules) allows Flooding.This issue affects Hacker Hotel Badge 2024: from 0.1.0 through 0.1.3.
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Analysis
by VulDB Data Team • 04/20/2025
The vulnerability identified as CVE-2024-21875 represents a critical resource allocation flaw in the Hacker Hotel Badge 2024 firmware version 0.1.0 through 0.1.3, specifically affecting devices running on risc-v architecture with billboard modules. This issue stems from inadequate bounds checking and resource management within the badge's memory allocation mechanisms, creating a pathway for malicious actors to exploit the system through resource exhaustion attacks. The vulnerability manifests when the badge receives malformed or excessive data inputs that trigger uncontrolled memory allocation without proper throttling mechanisms, leading to system instability and complete service disruption.
The technical flaw resides in the badge's handling of data processing tasks within its risc-v processor environment, where the system fails to implement proper resource limits or rate limiting controls during memory allocation operations. This allows an attacker to flood the device with specially crafted inputs that cause the system to continuously allocate memory resources without proper cleanup or saturation controls. The vulnerability directly maps to CWE-770, which defines allocations of resources without limits or throttling, making the system susceptible to denial of service conditions. When the badge's memory management subsystem processes these excessive resource requests, it rapidly consumes available heap space, stack memory, and other system resources until the device becomes unresponsive or crashes entirely.
The operational impact of this vulnerability extends beyond simple service interruption, as it represents a significant security risk for the Hacker Hotel Badge 2024 deployment environment. Attackers can leverage this weakness to perform sustained denial of service attacks against badge systems, potentially disrupting conference operations or compromising the integrity of badge-based access control systems. The vulnerability is particularly concerning in environments where badges serve as primary access devices, as the attack could be used to deny legitimate users access to conference facilities or services. The risc-v architecture's resource constraints make the impact more severe, as these systems typically operate with limited memory and processing capabilities, making them more susceptible to resource exhaustion attacks.
Mitigation strategies for CVE-2024-21875 should focus on implementing comprehensive resource management controls within the badge firmware, including strict allocation limits, memory pool management, and input validation mechanisms. System administrators should immediately upgrade to firmware versions beyond 0.1.3 to address the vulnerability, while implementing monitoring solutions that can detect unusual resource allocation patterns. The remediation process should incorporate proper error handling and resource cleanup procedures that prevent uncontrolled memory growth, aligning with best practices outlined in the ATT&CK framework's resource exhaustion techniques. Additionally, network-level controls and rate limiting should be implemented to prevent external exploitation attempts, while regular security audits of embedded systems should be conducted to identify similar vulnerabilities in other IoT devices within the conference infrastructure.