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, which was classified as critical, has been found in Tenda O3 1.0.0.10. This issue affects the function formexeCommand. The manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-272117 was assigned to this vulnerability. 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-2024-6963 is a critical stack-based buffer overflow in the Tenda O3 firmware version 1.0.0.10, specifically within the formexeCommand function. This flaw allows remote attackers to manipulate the cmdinput argument, leading to potential exploitation. The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity of this issue, 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 business impact of this vulnerability is significant. If exploited, attackers could gain unauthorized access to the device, execute arbitrary code, and potentially compromise the entire network to which the device is connected. This could lead to data breaches, service disruptions, and reputational damage. The likelihood of exploitation is heightened by the public disclosure of the exploit and the vendor's lack of response to the vulnerability disclosure.
2. Potential Attack Scenarios
One potential attack scenario involves an attacker targeting a Tenda O3 device exposed to the internet. The attacker crafts a malicious payload designed to exploit the stack-based buffer overflow in the formexeCommand function. By sending this payload to the device, the attacker overflows the buffer, overwriting critical memory structures and gaining control over the device's execution flow.
The attack process begins with the attacker scanning for vulnerable Tenda O3 devices using publicly available tools. Once a target is identified, the attacker sends the malicious payload to the device's vulnerable function. Successful exploitation allows the attacker to execute arbitrary code with the privileges of the affected service, potentially leading to a full device compromise. The attacker could then pivot to other devices on the network, exfiltrate sensitive data, or deploy ransomware.
The potential outcomes of this attack include complete device compromise, unauthorized access to sensitive information, disruption of network services, and lateral movement within the network to target additional systems.
3. Mitigation Recommendations
Immediate action is required to mitigate this vulnerability. Organizations using Tenda O3 devices should:
- Disconnect affected devices from the internet or restrict access to trusted networks only.
- Monitor for firmware updates from Tenda and apply patches as soon as they become available.
- Implement network segmentation to limit the potential impact of a compromised device.
- Deploy intrusion detection systems (IDS) or intrusion prevention systems (IPS) to detect and block exploitation attempts.
- Regularly review and update security configurations to minimize attack surfaces.
For further technical details and exploit information, refer to the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-6963
- VulDB Entry: https://vuldb.com/?id.272117
- GitHub Exploit Details: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/O3V2.0/formexeCommand.md
4. Executive Summary
CVE-2024-6963 is a critical vulnerability affecting Tenda O3 devices, allowing remote attackers to execute arbitrary code through a stack-based buffer overflow. This flaw poses a high risk to organizations using these devices, with potential impacts including data breaches, service disruptions, and network compromise. The vulnerability is easily exploitable, and public disclosure of the exploit increases the likelihood of attacks.
To protect against this threat, immediate action is required. Organizations should isolate affected devices, monitor for firmware updates, and implement network security measures to mitigate risks. Addressing this vulnerability is critical to safeguarding sensitive data, maintaining operational continuity, and protecting organizational reputation. The urgency of this issue cannot be overstated, and proactive measures are essential to prevent exploitation.
Severity: Unknown
Description: A vulnerability, which was classified as critical, was found in Tenda O3 1.0.0.10. Affected is the function fromDhcpSetSer. The manipulation of the argument dhcpEn/startIP/endIP/preDNS/altDNS/mask/gateway leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-272118 is the identifier assigned to this vulnerability. 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-2024-6964 is a critical stack-based buffer overflow in the Tenda O3 firmware version 1.0.0.10, specifically affecting the `fromDhcpSetSer` function. This flaw allows remote attackers to manipulate arguments such as `dhcpEn`, `startIP`, `endIP`, `preDNS`, `altDNS`, `mask`, and `gateway`, leading to a buffer overflow condition. The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity of this issue, with impacts on confidentiality, integrity, and availability rated as high.
The likelihood of exploitation is significant due to the public disclosure of the exploit and the availability of proof-of-concept code. Attackers with low privileges can exploit this vulnerability remotely, making it easily accessible. The business impact 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. The lack of response from the vendor further exacerbates the risk, as no patches or mitigations have been provided.
2. Potential Attack Scenarios
One potential attack scenario involves an attacker targeting a Tenda O3 device exposed to the internet. The attacker crafts a malicious DHCP configuration request, manipulating the vulnerable arguments in the `fromDhcpSetSer` function. By sending this crafted request to the device, the attacker triggers a stack-based buffer overflow, allowing them to execute arbitrary code with elevated privileges.
The attack process begins with reconnaissance to identify vulnerable Tenda O3 devices. The attacker then sends the malicious payload, exploiting the buffer overflow to gain control over the device. Once compromised, the attacker can exfiltrate sensitive data, modify device configurations, or use the device as a pivot point to launch further attacks within the network. The potential outcomes include data breaches, service disruption, and complete system takeover.
3. Mitigation Recommendations
Immediate actions should be taken to mitigate this vulnerability. First, isolate affected Tenda O3 devices from the internet and restrict access to trusted networks only. If possible, disable the DHCP server functionality or replace the device with a secure alternative. Monitor network traffic for unusual activity, particularly DHCP-related requests, to detect potential exploitation attempts.
Since the vendor has not provided a patch, consider reaching out to the vendor for updates or workarounds. In the absence of vendor support, explore community-driven solutions or third-party firmware that may address the vulnerability. Regularly review and update network security policies to ensure robust defenses against similar vulnerabilities.
For further technical details and exploit analysis, refer to the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-6964
- VulDB Entry: https://vuldb.com/?id.272118
- GitHub Exploit Repository: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/O3V2.0/fromDhcpSetSer.md
4. Executive Summary
CVE-2024-6964 is a critical vulnerability in Tenda O3 devices that allows remote attackers to execute arbitrary code via a stack-based buffer overflow. This flaw poses a high risk to organizations using affected devices, as it can lead to data breaches, service disruptions, and complete system compromise. The vulnerability is easily exploitable, and public disclosure of the exploit increases the likelihood of attacks.
Immediate action is required to mitigate this risk. Organizations should isolate affected devices, restrict network access, and monitor for suspicious activity. While no vendor patch is currently available, exploring alternative firmware or community-driven solutions is recommended. Addressing this vulnerability is crucial to safeguarding sensitive data, maintaining service availability, and preventing potential network-wide compromises. The business impact of inaction could be severe, making this a high-priority issue for all stakeholders.
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.