Horizon Alert
Summary of the vulnerability and why it matters
This advisory addresses a critical vulnerability in Tenda i29 network devices. The issue involves a flaw in how the device handles network requests, potentially allowing unauthorized access and control. The primary concern is to confirm if these devices are in use and, if so, to assess the potential exposure.
- Flaw allows unauthorized device control.
- Critical vulnerability in network infrastructure.
- Confirm relevance and potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker could reach the vulnerable function by sending specially crafted network requests to the device. This could allow them to trigger a stack overflow, potentially leading to high impact on confidentiality, integrity, and availability.
- No authentication required.
- Triggered by sending a malformed `ip` parameter.
- High impact to confidentiality, integrity, and availability.
Live Threat
Current exploitation, exposure, and threat context
A stack overflow vulnerability in the `setPing` function could allow an unauthenticated attacker to remotely crash or potentially take control of the device by sending a specially crafted request. This could disrupt network services managed by the device.
- Device stability and availability.
- Network requests could trigger overflow.
- Service disruption and potential compromise.
Operational Fix
Recommended remediation, mitigation, and detection steps
To address this critical vulnerability, infrastructure and network teams are primarily responsible for identifying affected Tenda i29 devices. The first action should be to scan the network for these devices, determine their exposure and criticality, and then coordinate with the relevant owner for remediation planning.
- Network and infrastructure teams own remediation.
- Verify device reachability and business criticality.
- Plan coordinated firmware updates.
