Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability has been identified in Tenda i29 devices, stemming from a buffer overflow in a specific function. This type of flaw can potentially allow unauthorized access and control over network devices. The primary concern at this time is to confirm if this specific technology is in use within our environment and to what extent it may be exposed.
- Vulnerability in Tenda i29 network devices.
- Confirms relevance and exposure if Tenda i29 is deployed.
- Understand potential impact to network infrastructure.
Attack Path
How an attacker could exploit the issue
An attacker could target the Tenda i29 router over the network, as the vulnerability exists in a function that handles time information. By sending a specially crafted request to the router, an attacker could trigger a buffer overflow. If successful, this could allow an attacker to gain control over the device, potentially leading to significant compromise of the network it protects.
- Network access to the device is required.
- Triggered by sending a malformed time parameter.
- Allows complete device takeover.
Live Threat
Current exploitation, exposure, and threat context
A buffer overflow in the `sysTimeInfoSet` function of Tenda i29 firmware could allow an unauthenticated attacker to remotely execute arbitrary code. This could affect the device's normal operation and potentially lead to a compromise of the network it manages.
- Device's system integrity at risk.
- Unauthenticated network access may exploit.
- Loss of device functionality and control.
Operational Fix
Recommended remediation, mitigation, and detection steps
Determining responsibility for this vulnerability requires identifying the deployment context of the Tenda i29. If deployed as part of the core network infrastructure, the network or infrastructure teams would likely own the remediation. If used as a standalone device managed by specific application owners, they would be accountable. The first practical step is to inventory all Tenda i29 devices, assess their network exposure and criticality, and confirm the accountable owner before planning any necessary updates or configuration changes.
- Network or application teams should own remediation.
- Verify device exposure and criticality first.
- Plan coordinated updates or configuration changes.
