Description
An unauthenticated remote command execution vulnerability exists in Samsung WLAN AP WEA453e firmware prior to version 5.2.4.T1 via improper input validation in the “Tech Support” diagnostic functionality. The command1 and command2 POST or GET parameters accept arbitrary shell commands that are executed with root privileges on the underlying operating system. An attacker can exploit this by crafting a request that injects shell commands to create output files in writable directories and then access their contents via the download endpoint. This flaw allows complete compromise of the device without authentication.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-21427
1. Vulnerability Assessment and Severity Evaluation
The vulnerability EUVD-2025-21427, also known as CVE-2025-34068, is an unauthenticated remote command execution flaw in Samsung WLAN AP WEA453e firmware versions prior to 5.2.4.T1. This vulnerability arises from improper input validation in the "Tech Support" diagnostic functionality, allowing arbitrary shell commands to be executed with root privileges.
Severity Evaluation:
- CVSS Base Score: 9.3
- CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
The high base score indicates a critical vulnerability due to its potential for complete device compromise without authentication. The attack vector is network-based (AV:N), requires low complexity (AC:L), and does not need user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (VC:H, VI:H, VA:H).
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Network-Based Attack: An attacker can exploit this vulnerability over the network without needing physical access to the device.
- Unauthenticated Access: The vulnerability does not require authentication, making it easier for attackers to exploit.
Exploitation Methods:
- Command Injection: An attacker can send crafted HTTP requests to the "Tech Support" diagnostic endpoint, injecting shell commands into the
command1andcommand2parameters. - File Creation and Access: The injected commands can create output files in writable directories and then access their contents via the download endpoint, allowing data exfiltration.
3. Affected Systems and Software Versions
Affected Systems:
- Samsung WLAN AP WEA453e
Affected Software Versions:
- Firmware versions prior to 5.2.4.T1
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Firmware Update: Upgrade to firmware version 5.2.4.T1 or later, which addresses the vulnerability.
- Network Segmentation: Isolate the affected devices from public networks to limit exposure.
- Access Control: Implement strict access controls to restrict unauthorized access to the device.
Long-Term Mitigation:
- Regular Patching: Ensure regular updates and patches are applied to all network devices.
- Security Audits: Conduct regular security audits and vulnerability assessments.
- Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to organizations using the affected Samsung WLAN AP WEA453e devices, particularly in critical infrastructure sectors such as healthcare, finance, and government. Unauthorized access and command execution can lead to data breaches, service disruptions, and potential loss of sensitive information.
Regulatory Compliance:
- Organizations must ensure compliance with GDPR and other relevant regulations to protect personal data.
- Adherence to ENISA guidelines and best practices for network security.
6. Technical Details for Security Professionals
Vulnerability Details:
- Endpoint: The "Tech Support" diagnostic functionality accepts
command1andcommand2parameters via POST or GET requests. - Input Validation: The lack of proper input validation allows arbitrary shell commands to be executed with root privileges.
- Exploitation: Crafted HTTP requests can inject commands to create files and exfiltrate data.
Detection and Response:
- Log Analysis: Monitor logs for unusual activity related to the "Tech Support" endpoint.
- Anomaly Detection: Implement anomaly detection mechanisms to identify and respond to suspicious network traffic.
- Incident Response: Develop and maintain an incident response plan to address potential exploitation attempts.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their networks from potential attacks.