Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects Tenda wireless access points, specifically the i29 model. It could allow unauthenticated attackers to remotely gain complete control of the device by exploiting a buffer overflow flaw. The main concern is confirming relevance and exposure.
- Allows remote device takeover.
- Critical flaw in network infrastructure.
- Assess potential exposure to your network.
Attack Path
How an attacker could exploit the issue
An attacker could send a specially crafted request containing a long `ip` parameter to the vulnerable device. This could overwrite memory in the `spdtstConfigAndStart` function, potentially allowing the attacker to execute arbitrary code on the device.
- Network access required.
- Input to `ip` parameter triggers overflow.
- Remote code execution possible.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow an unauthenticated attacker to remotely disrupt the device's operation by sending specially crafted requests. If successful, this could impact the availability of network services managed by the device.
- Device availability may be impacted.
- Network requests could trigger an overflow.
- Service disruption could occur.
Operational Fix
Recommended remediation, mitigation, and detection steps
The Tenda i29 wireless access point, specifically firmware versions 1.0.0.2 and 1.0.0.5, is vulnerable to a critical buffer overflow. Infrastructure or network teams responsible for managing these devices should initiate triage by identifying all deployed i29 units, assessing their network exposure and business criticality, and confirming the accountable owner for remediation. Given the CVSS score, immediate action is warranted to mitigate potential compromise.
- Network/infrastructure teams own remediation.
- Verify device exposure and criticality.
- Plan coordinated vendor outreach.
