Severity: HIGH
Description: Tenda O3V2 with firmware versions V1.0.0.10 and V1.0.0.12 was discovered to contain a Blind Command Injection via dest parameter in /goform/getTraceroute. This vulnerability allows attackers to execute arbitrary commands with root privileges. Authentication is required to exploit this vulnerability.
CVSS Score: N/A
N/A
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-34338 is a Blind Command Injection flaw in the Tenda O3V2 router firmware versions V1.0.0.10 and V1.0.0.12. This vulnerability resides in the `/goform/getTraceroute` endpoint, specifically in the `dest` parameter, which allows an attacker to inject and execute arbitrary commands with root privileges. The exploitation of this vulnerability requires authentication, which means an attacker must first gain access to valid credentials.
The CVSS v3.1 base score of 7.2 (High) reflects the significant risk posed by this vulnerability. The attack vector is network-based, and the complexity is low, making it relatively easy for an attacker to exploit if they have the necessary credentials. The potential impacts are severe, as successful exploitation could lead to a complete compromise of the device, including unauthorized access to sensitive data, modification of system configurations, and disruption of services. The confidentiality, integrity, and availability of the affected systems are all at high risk.
The likelihood of exploitation is moderate, as it requires authenticated access, but the ease of exploitation is high once credentials are obtained. This vulnerability could be particularly damaging in environments where the Tenda O3V2 router is used in critical infrastructure or business operations, as it could lead to significant operational disruptions and data breaches.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability in the following scenario:
An attacker gains access to valid credentials for the Tenda O3V2 router, either through brute force attacks, credential stuffing, or social engineering. Once authenticated, the attacker sends a specially crafted HTTP request to the `/goform/getTraceroute` endpoint, injecting malicious commands into the `dest` parameter. These commands are executed with root privileges, allowing the attacker to take full control of the router.
The attacker could then use this access to reconfigure the router, intercept network traffic, or deploy additional malware to other devices on the network. For example, the attacker could modify DNS settings to redirect users to malicious websites, steal sensitive data, or disrupt network connectivity. In a worst-case scenario, the attacker could use the compromised router as a pivot point to launch further attacks on internal systems, potentially leading to a widespread breach of the organization's network.
3. Mitigation Recommendations
To mitigate this vulnerability, the following actions should be taken immediately:
- Apply the latest firmware update from Tenda for the O3V2 router. If a patch is not yet available, monitor the vendor's website for updates and apply it as soon as it is released.
- Restrict access to the router's administrative interface to trusted IP addresses only. This can be done by configuring firewall rules or access control lists (ACLs) to limit access to the router's management interface.
- Change default credentials and enforce strong password policies for all user accounts with access to the router. Consider implementing multi-factor authentication (MFA) if supported.
- Monitor network traffic for unusual activity, such as unexpected outbound connections or attempts to access the `/goform/getTraceroute` endpoint.
- Disable unnecessary features and services on the router to reduce the attack surface. For example, if the traceroute functionality is not required, disable it.
For further guidance, refer to the following resources:
- Vendor advisory (if available): Monitor Tenda's official website for updates.
- CISA resources: Visit https://www.cisa.gov for additional mitigation strategies.
- PacketStorm Security: Review the details at https://packetstormsecurity.com/search/?q=CVE-2024-34338.
4. Executive Summary
CVE-2024-34338 is a high-severity vulnerability affecting Tenda O3V2 routers running firmware versions V1.0.0.10 and V1.0.0.12. This flaw allows authenticated attackers to execute arbitrary commands with root privileges, potentially leading to a complete compromise of the device. The vulnerability poses significant risks to confidentiality, integrity, and availability, making it a critical issue for organizations using these routers.
Attackers could exploit this vulnerability to gain full control of the router, intercept sensitive data, disrupt network operations, or launch further attacks on internal systems. While exploitation requires authentication, the ease of exploitation and the potential impact make this a serious threat.
Immediate action is required to mitigate this vulnerability. Organizations should apply firmware updates, restrict access to the router's management interface, enforce strong authentication measures, and monitor for suspicious activity. Addressing this vulnerability promptly is essential to protect critical infrastructure and prevent potential breaches.
Severity: Unknown
Description: A vulnerability classified as critical was found in Tenda O3 1.0.0.10. This vulnerability affects the function formQosSet. The manipulation of the argument remark/ipRange/upSpeed/downSpeed/enable leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-272116. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: N/A
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-6962 is a critical stack-based buffer overflow in the Tenda O3 router firmware version 1.0.0.10. This flaw resides in the formQosSet function, where improper handling of the arguments remark, ipRange, upSpeed, downSpeed, and enable can be exploited to overwrite memory on the stack. The attack can be initiated remotely, requiring only low-privileged access (PR:L), and no user interaction is needed (UI:N). The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity of this issue, with high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H).
The likelihood of exploitation is significant, as the vulnerability is remotely exploitable, and the exploit has been publicly disclosed. Attackers can leverage this flaw to execute arbitrary code, potentially gaining full control of the affected device. This could lead to unauthorized access to sensitive data, disruption of network services, or even the deployment of malware. The business impact is severe, particularly for organizations relying on Tenda O3 routers for critical operations, as it could result in data breaches, service outages, and reputational damage.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by sending a specially crafted HTTP request to the Tenda O3 router's web interface, targeting the formQosSet function. The malicious payload would manipulate the vulnerable arguments to trigger a stack-based buffer overflow. Once the overflow is triggered, the attacker could overwrite the return address on the stack, redirecting the execution flow to their injected code.
The attack process would involve the following steps:
- The attacker identifies a vulnerable Tenda O3 router exposed to the internet or within the local network.
- They craft a malicious HTTP request containing oversized or malformed data in the remark, ipRange, upSpeed, downSpeed, or enable parameters.
- The router processes the request, causing a buffer overflow and allowing the attacker to execute arbitrary code.
- The attacker gains control of the router, potentially exfiltrating sensitive data, modifying network configurations, or deploying ransomware.
The potential outcomes include complete compromise of the router, unauthorized access to connected devices, and disruption of network services.
3. Mitigation Recommendations
Immediate action is required to mitigate this vulnerability. Organizations using Tenda O3 routers should:
- Discontinue use of the affected firmware version (1.0.0.10) and upgrade to a patched version if available. As of now, the vendor has not released a patch, so monitoring vendor communications is critical.
- If no patch is available, consider replacing the affected devices with a more secure alternative.
- Implement network segmentation to isolate vulnerable devices and limit the attack surface.
- Apply strict access controls to the router's management interface, ensuring it is not exposed to the internet.
- Monitor network traffic for unusual activity that may indicate exploitation attempts.
Relevant resources for further information include the VulDB entry (https://vuldb.com/?id.272116) and the PacketStorm Security page (https://packetstormsecurity.com/search/?q=CVE-2024-6962).
4. Executive Summary
CVE-2024-6962 is a critical vulnerability in Tenda O3 routers that allows remote attackers to execute arbitrary code via a stack-based buffer overflow. This flaw poses a high risk to organizations using the affected devices, as it can lead to data breaches, service disruptions, and unauthorized access to network resources. The exploit has been publicly disclosed, increasing the likelihood of attacks.
To protect against this vulnerability, organizations should immediately discontinue use of the affected firmware, apply strict access controls, and monitor for signs of exploitation. If no patch is available, replacing the devices may be necessary. Addressing this issue is urgent to prevent potential business disruptions and safeguard sensitive data.
Severity: Unknown
Description: A vulnerability has been found in Tenda O3 1.0.0.10 and classified as critical. Affected by this vulnerability is the function fromVirtualSet. The manipulation of the argument ip/localPort/publicPort/app leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-272119. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: N/A
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-6965 is a critical stack-based buffer overflow in the Tenda O3 firmware version 1.0.0.10, specifically within the fromVirtualSet function. This flaw allows remote attackers to manipulate the arguments ip, localPort, publicPort, and app, leading to potential exploitation. The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity, with impacts on confidentiality, integrity, and availability rated as high. The attack vector is network-based, requiring low attack complexity and low privileges, making it relatively easy to exploit.
The likelihood of exploitation is significant, as the exploit has been publicly disclosed and may already be in use. The lack of response from the vendor further exacerbates the risk, as no patches or mitigations have been provided. The business impact of this vulnerability is severe, as successful exploitation could lead to complete system compromise, unauthorized access to sensitive data, disruption of services, and potential lateral movement within the network. Organizations using the affected Tenda O3 devices are at high risk of operational disruption and data breaches.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by crafting a malicious payload targeting the fromVirtualSet function. The attack vector would involve sending specially crafted network packets to the vulnerable device, manipulating the ip, localPort, publicPort, and app arguments to trigger the buffer overflow. This could allow the attacker to execute arbitrary code on the device with the privileges of the affected service.
The attack process would begin with reconnaissance to identify vulnerable Tenda O3 devices exposed to the internet or within the target network. The attacker would then use publicly available exploit code or develop a custom exploit to send the malicious payload. Upon successful exploitation, the attacker could gain full control of the device, exfiltrate sensitive data, or use the compromised device as a pivot point for further attacks within the network. The potential outcomes include data theft, service disruption, and complete system compromise, leading to significant operational and reputational damage.
3. Mitigation Recommendations
Immediate action is required to mitigate this vulnerability. Organizations using Tenda O3 devices should:
- Disconnect affected devices from the network until a patch or mitigation is available.
- Monitor network traffic for unusual activity or attempts to exploit the vulnerability.
- Apply network segmentation to limit the exposure of vulnerable devices.
- Contact the vendor, Tenda, for updates or patches, though no response has been received to date.
- Consider replacing affected devices with those from vendors that provide timely security updates.
For additional guidance, refer to the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-6965
- VulDB Entry: https://vuldb.com/?id.272119
- Exploit Details: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/O3V2.0/fromVirtualSet.md
4. Executive Summary
CVE-2024-6965 is a critical vulnerability in Tenda O3 devices, allowing remote attackers to execute arbitrary code and potentially take full control of affected systems. The vulnerability is easy to exploit, and the exploit has been publicly disclosed, increasing the risk of widespread attacks. The lack of vendor response further complicates the situation, leaving organizations with limited mitigation options.
The potential impacts include data breaches, service disruptions, and complete system compromise, posing significant risks to business operations and reputation. Immediate action is required to mitigate this vulnerability, including disconnecting affected devices, monitoring for exploitation attempts, and considering device replacement. This issue highlights the importance of proactive vulnerability management and the need for vendors to provide timely security updates to protect their customers.