Description
BYTEVALUE Intelligent Flow Control Router contains a command injection vulnerability via the /goform/webRead/open endpoint. The `path` parameter is not properly validated and is echoed into a shell context, allowing an attacker to inject and execute arbitrary shell commands on the device. Successful exploitation can lead to writing backdoors, privilege escalation on the host, and full compromise of the router and its management functions. VulnCheck has observed this vulnerability being targeted by the RondoDox botnet campaign.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2023-59994
1. Vulnerability Assessment and Severity Evaluation
The vulnerability EUVD-2023-59994 affects the BYTEVALUE Intelligent Flow Control Router, specifically through a command injection flaw in the /goform/webRead/open endpoint. The path parameter is not properly validated, allowing an attacker to inject and execute arbitrary shell commands. This vulnerability is severe, with a CVSS Base Score of 9.3, indicating a critical risk. The 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 highlights that the vulnerability can be exploited remotely with low complexity, requiring no privileges or user interaction, and can result in high confidentiality, integrity, and availability impacts.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Remote Command Injection: An attacker can send a crafted HTTP request to the vulnerable endpoint, injecting shell commands into the
pathparameter. - Botnet Campaigns: The vulnerability has been observed being targeted by the RondoDox botnet campaign, indicating active exploitation in the wild.
Exploitation Methods:
- Shell Command Execution: By injecting shell commands, an attacker can execute arbitrary code on the router, leading to various malicious activities.
- Backdoor Installation: Attackers can write backdoors to maintain persistent access.
- Privilege Escalation: Successful exploitation can lead to privilege escalation, allowing attackers to gain higher-level access to the router and its management functions.
3. Affected Systems and Software Versions
The vulnerability affects all versions of the BYTEVALUE Intelligent Flow Control Router. Specific software versions are not mentioned, but it is implied that all versions are vulnerable unless explicitly patched.
4. Recommended Mitigation Strategies
Immediate Actions:
- Patch Management: Apply the latest firmware updates provided by BYTEVALUE as soon as they are available.
- Network Segmentation: Isolate the router from critical networks to limit the potential impact of an attack.
- Firewall Rules: Implement strict firewall rules to restrict access to the vulnerable endpoint.
Long-Term Strategies:
- Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
- Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activities and potential exploitation attempts.
- User Education: Educate users on the importance of not exposing router management interfaces to the internet.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to European cybersecurity, particularly for organizations and individuals using BYTEVALUE routers. The potential for full compromise of the router and its management functions can lead to data breaches, unauthorized access, and disruption of network services. The active exploitation by the RondoDox botnet campaign further underscores the urgency of addressing this vulnerability.
6. Technical Details for Security Professionals
Vulnerability Details:
- Endpoint:
/goform/webRead/open - Parameter:
path - Injection Point: The
pathparameter is echoed into a shell context without proper validation.
Exploitation Example:
GET /goform/webRead/open?path=;<malicious_command> HTTP/1.1
Host: vulnerable-router.example.com
Detection and Monitoring:
- Log Analysis: Monitor router logs for unusual command execution or access attempts to the vulnerable endpoint.
- Network Traffic Analysis: Use network monitoring tools to detect anomalous traffic patterns indicative of command injection attempts.
References:
Conclusion: The command injection vulnerability in the BYTEVALUE Intelligent Flow Control Router is critical and requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk of exploitation. Continuous monitoring and regular security assessments are essential to maintain a strong cybersecurity posture.