Severity: HIGH
Description: A vulnerability was found in Tenda W15E 15.11.0.14. It has been classified as critical. This affects the function formIPMacBindAdd of the file /goform/addIpMacBind. The manipulation of the argument IPMacBindRule leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-261861 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: 8.8
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-4118 is a critical stack-based buffer overflow in the Tenda W15E router firmware version 15.11.0.14. This flaw resides in the `formIPMacBindAdd` function within the `/goform/addIpMacBind` file, specifically affecting the `IPMacBindRule` argument. The vulnerability allows remote attackers with low privileges to execute arbitrary code by exploiting the buffer overflow, leading to potential compromise of the device.
The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity of this issue. The attack vector is network-based, requiring low attack complexity and no user interaction, making it relatively easy to exploit. The potential impacts are severe, with full compromise of confidentiality, integrity, and availability. Attackers could gain unauthorized access to the device, manipulate network settings, exfiltrate sensitive data, or render the device inoperable.
The likelihood of exploitation is high, given that 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. Organizations using the affected Tenda W15E routers are at significant risk of compromise, particularly if the devices are exposed to untrusted networks.
2. Potential Attack Scenarios
One potential attack scenario involves an attacker targeting a Tenda W15E router exposed to the internet. The attacker crafts a malicious payload designed to trigger the buffer overflow in the `IPMacBindRule` argument of the `formIPMacBindAdd` function. By sending this payload to the router's web interface, the attacker overflows the stack, overwriting critical memory regions and injecting malicious code.
Once the exploit is successful, the attacker gains control over the router, enabling them to reconfigure network settings, intercept traffic, or deploy additional malware. For example, the attacker could redirect DNS queries to a malicious server, enabling phishing attacks or data exfiltration. Alternatively, the attacker could disable the router entirely, causing a denial of service and disrupting business operations.
The attack process is straightforward, requiring only network access to the router and knowledge of the exploit. Publicly available exploit code further lowers the barrier to entry, making it accessible to less skilled attackers. The potential outcomes include data breaches, network compromise, and operational downtime, all of which could have severe financial and reputational consequences for affected organizations.
3. Mitigation Recommendations
Immediate action is required to mitigate the risks associated with this vulnerability. Organizations using Tenda W15E routers should:
- Disconnect affected devices from untrusted networks, such as the internet, to reduce exposure to potential attacks.
- Monitor network traffic for unusual activity, such as unexpected configuration changes or unauthorized access attempts.
- Apply any available firmware updates or patches from the vendor, if released. As of now, the vendor has not provided a fix, so organizations should regularly check for updates.
- Consider replacing affected devices with routers from vendors that provide timely security updates and support.
- Implement network segmentation to limit the impact of a potential compromise. For example, isolate critical systems from devices that may be vulnerable.
- Review and strengthen access controls to ensure that only authorized users can access router management interfaces.
For additional guidance, refer to the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-4118
- VulDB Entry: https://vuldb.com/?id.261861
- GitHub Exploit Details: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formIPMacBindAdd.md
4. Executive Summary
CVE-2024-4118 is a critical vulnerability affecting Tenda W15E routers, allowing remote attackers to execute arbitrary code and potentially take full control of the device. This flaw poses significant risks to confidentiality, integrity, and availability, with potential impacts including data breaches, network compromise, and operational downtime. The vulnerability is easy to exploit, and public disclosure of the exploit increases the likelihood of attacks.
Organizations using affected routers must take immediate action to mitigate risks. Recommendations include disconnecting devices from untrusted networks, monitoring for suspicious activity, and replacing vulnerable hardware if no patches are available. The lack of vendor response underscores the urgency of addressing this issue proactively. Failure to act could result in severe financial and reputational damage, making it imperative to prioritize this vulnerability in your security strategy.
Severity: HIGH
Description: A vulnerability classified as critical has been found in Tenda W15E 15.11.0.14. Affected is the function formQOSRuleDel. The manipulation of the argument qosIndex leads to stack-based buffer overflow. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-261864. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: 8.8
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-4121 is a critical stack-based buffer overflow in the Tenda W15E firmware version 15.11.0.14, specifically within the formQOSRuleDel function. This flaw allows remote attackers to manipulate the qosIndex argument, leading to potential exploitation. The CVSS v3.1 base score of 8.8 (HIGH) underscores the severity of this issue, with high impacts on confidentiality, integrity, and availability.
The nature of this vulnerability makes it particularly dangerous as it can be exploited remotely with low attack complexity, requiring only low privileges. The likelihood of exploitation is moderate, given the public disclosure and the lack of vendor response. The potential business impact is significant, as successful exploitation could lead to unauthorized access, data breaches, or even complete system compromise, disrupting operations and damaging organizational reputation.
2. Potential Attack Scenarios
One potential attack scenario involves an attacker leveraging the stack-based buffer overflow to execute arbitrary code on the affected Tenda W15E device. The attack vector begins with the attacker sending a specially crafted network request to the device, targeting the formQOSRuleDel function. By manipulating the qosIndex argument, the attacker overflows the stack, overwriting critical memory regions.
The attack process involves the following steps:
- The attacker identifies a vulnerable Tenda W15E device exposed to the internet or within the network.
- The attacker crafts a malicious payload designed to exploit the buffer overflow, embedding it within the qosIndex parameter.
- The payload is delivered via a network request, triggering the overflow and allowing the attacker to execute arbitrary code with the privileges of the affected process.
Potential outcomes include:
- Full system compromise, enabling the attacker to gain administrative access.
- Installation of malware or backdoors for persistent access.
- Disruption of network services, leading to downtime and operational impact.
3. Mitigation Recommendations
Immediate actions should be taken to mitigate the risk posed by this vulnerability:
- Discontinue use of the affected Tenda W15E firmware version 15.11.0.14 until a patch is available.
- If the device must remain in use, restrict network access to minimize exposure. Implement strict firewall rules to limit access to trusted IP addresses only.
- Monitor network traffic for unusual activity that may indicate exploitation attempts.
- Contact Tenda support for updates on a potential patch or workaround.
Relevant resources for further information and updates include:
- VulDB entry: https://vuldb.com/?id.261864
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-4121
- GitHub repository detailing the vulnerability: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formQOSRuleDel.md
4. Executive Summary
CVE-2024-4121 is a critical vulnerability affecting the Tenda W15E firmware, posing a high risk to organizations using this device. The flaw allows remote attackers to exploit a stack-based buffer overflow, potentially leading to system compromise, data breaches, and operational disruption. The vulnerability is easy to exploit and has significant impacts on confidentiality, integrity, and availability.
Given the lack of vendor response and the public disclosure of this vulnerability, immediate action is required to mitigate risks. Organizations should restrict access to affected devices, monitor for exploitation attempts, and seek updates from the vendor. Addressing this vulnerability is crucial to safeguarding network infrastructure and maintaining business continuity.
Severity: HIGH
Description: A vulnerability has been found in Tenda W15E 15.11.0.14 and classified as critical. This vulnerability affects the function formSetStaticRoute of the file /goform/setStaticRoute. The manipulation of the argument staticRouteIndex 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-261868. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: 8.8
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-4125 is a critical stack-based buffer overflow in the Tenda W15E router firmware version 15.11.0.14. This flaw resides in the formSetStaticRoute function within the /goform/setStaticRoute file, specifically involving the manipulation of the staticRouteIndex argument. The vulnerability is remotely exploitable, requiring low attack complexity and low privileges, making it highly accessible to attackers. The CVSS v3.1 base score of 8.8 (HIGH) underscores its severity, 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 lack of response from the vendor, Tenda. Attackers can leverage this vulnerability to execute arbitrary code, potentially gaining full control over the affected device. This could lead to unauthorized access to sensitive data, disruption of network services, or even the deployment of malware or ransomware. The business impact is substantial, as compromised routers can serve as entry points for broader network infiltration, leading to data breaches, operational downtime, and reputational damage.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by sending a specially crafted HTTP request to the vulnerable /goform/setStaticRoute endpoint on the Tenda W15E router. The request would manipulate the staticRouteIndex argument to trigger a stack-based buffer overflow. This overflow could overwrite critical memory regions, allowing the attacker to execute arbitrary code with the privileges of the router's firmware.
Once the attacker gains control, they could perform various malicious activities, such as reconfiguring the router to redirect traffic through a malicious server, intercepting sensitive data, or deploying malware to other devices on the network. In a worst-case scenario, the attacker could use the compromised router as a pivot point to infiltrate the entire network, leading to widespread data exfiltration or ransomware deployment. The potential outcomes include complete loss of data confidentiality, integrity, and availability, as well as significant financial and reputational damage to the affected organization.
3. Mitigation Recommendations
Immediate action is required to mitigate this vulnerability. Organizations using the Tenda W15E router with firmware version 15.11.0.14 should take the following steps:
- Discontinue use of the affected firmware version and upgrade to a patched version if and when the vendor releases one. Monitor Tenda's official channels for updates.
- If a patch is not available, consider replacing the affected devices with routers from vendors that provide timely security updates.
- Implement network segmentation to limit the potential impact of a compromised router. Ensure that critical systems are isolated from devices with known vulnerabilities.
- Monitor network traffic for unusual activity, such as unexpected HTTP requests to the /goform/setStaticRoute endpoint, which could indicate exploitation attempts.
- Apply strict access controls to the router's administrative interface, ensuring that only authorized personnel can make configuration changes.
For further technical details and exploit references, consult the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-4125
- VulDB Entry: https://vuldb.com/?id.261868
- GitHub Exploit Documentation: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formSetStaticRoute.md
4. Executive Summary
CVE-2024-4125 is a critical vulnerability in the Tenda W15E router firmware 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 unauthorized access, data breaches, and network disruptions. The vulnerability is easily exploitable, and the public disclosure of the exploit increases the likelihood of attacks.
To protect your organization, immediate action is required. Discontinue use of the affected firmware, monitor for vendor updates, and consider replacing vulnerable devices if no patch is forthcoming. Implementing network segmentation and strict access controls can further reduce the risk of exploitation. Addressing this vulnerability is critical to safeguarding your network, data, and business operations. Failure to act could result in significant financial and reputational damage.
Severity: HIGH
Description: A vulnerability was found in Tenda W15E 15.11.0.14 and classified as critical. This issue affects the function formSetSysTime of the file /goform/SetSysTimeCfg. The manipulation of the argument manualTime 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-261869 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
CVSS Score: 8.8
B
No data available.
No data available.
1. Risk Assessment
The vulnerability identified as CVE-2024-4126 is a critical stack-based buffer overflow in the Tenda W15E router firmware version 15.11.0.14. The flaw resides in the `formSetSysTime` function within the `/goform/SetSysTimeCfg` file, specifically in the handling of the `manualTime` argument. This vulnerability can be exploited remotely, requiring low attack complexity and low privileges, making it highly accessible to attackers. 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, as the vulnerability has been publicly disclosed, and proof-of-concept (PoC) exploit code is available. Attackers can leverage this flaw to execute arbitrary code, potentially gaining full control over the affected device. This could lead to unauthorized access to sensitive data, disruption of network services, or further lateral movement within the network. The business impact includes potential data breaches, operational downtime, and reputational damage, particularly for organizations relying on Tenda W15E routers for critical infrastructure.
2. Potential Attack Scenarios
A potential attack scenario involves an attacker targeting a Tenda W15E router exposed to the internet. The attacker crafts a malicious payload designed to exploit the buffer overflow vulnerability in the `formSetSysTime` function. By sending a specially crafted HTTP request to the `/goform/SetSysTimeCfg` endpoint, the attacker overflows the stack buffer, overwriting critical memory regions. This allows the attacker to execute arbitrary code with the privileges of the affected service, typically root or administrative access.
Once the attacker gains control of the router, they can manipulate network traffic, intercept sensitive data, or deploy additional malware. For example, the attacker could redirect DNS queries to malicious servers, enabling phishing attacks or man-in-the-middle (MITM) attacks. Alternatively, the attacker could use the compromised router as a pivot point to infiltrate other devices on the internal network, escalating the attack's scope and impact. The potential outcomes include data exfiltration, service disruption, and complete network compromise.
3. Mitigation Recommendations
Immediate action is required to mitigate this vulnerability. Organizations using Tenda W15E routers should:
- Disconnect affected devices from the internet or restrict access to trusted IP addresses only.
- Monitor for firmware updates from Tenda and apply patches as soon as they become available. Given the vendor's lack of response to the initial disclosure, organizations should consider alternative router solutions if timely updates are not provided.
- 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 targeting this vulnerability.
- Regularly review and update firewall rules to minimize exposure to external threats.
For additional guidance, refer to the following resources:
- PacketStorm Security: https://packetstormsecurity.com/search/?q=CVE-2024-4126
- VulDB Entry: https://vuldb.com/?id.261869
- GitHub Exploit Details: https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/W15Ev1.0/formSetSysTime.md
4. Executive Summary
CVE-2024-4126 is a critical vulnerability in Tenda W15E routers that allows remote attackers to execute arbitrary code via a stack-based buffer overflow. This flaw poses a significant risk to organizations using affected devices, as it can lead to unauthorized access, data breaches, and service disruptions. The vulnerability is easily exploitable, with public proof-of-concept code available, increasing the likelihood of attacks.
To mitigate this risk, organizations should immediately isolate affected devices, monitor for firmware updates, and consider alternative solutions if patches are not promptly released. Implementing network segmentation and deploying intrusion detection systems can further reduce the attack surface. Addressing this vulnerability is critical to safeguarding sensitive data, maintaining operational continuity, and protecting organizational reputation. Immediate action is strongly recommended to prevent potential exploitation and its associated business impacts.