Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects certain D-Link DIR-823X devices. A flaw in the device's firmware allows an authorized attacker to execute arbitrary commands on remote devices. This could lead to unauthorized access and control of affected systems.
- Vulnerable D-Link DIR-823X firmware
- Command injection flaw
- Remote command execution
Attack Path
How an attacker could exploit the issue
An attacker can exploit a command injection vulnerability within D-Link DIR-823X devices. This attack requires the attacker to have authenticated access to the device. By sending a specially crafted POST request to a specific administrative endpoint, the attacker can trigger the execution of arbitrary commands. This capability could allow the attacker to gain unauthorized control over the affected device, potentially leading to further compromise of the network or data.
- Exposure condition: Authorized access to the device.
- Attacker starting point: Network access to the device.
- Trigger and result: POST request to `/goform/set_prohibiting` executes arbitrary commands.
Live Threat
Current exploitation, exposure, and threat context
A command injection vulnerability exists in D-Link DIR-823X devices, allowing unauthorized command execution. This could enable attackers to compromise affected devices and potentially use them for malicious purposes. Given the exposure of these devices, organizations should assess their risk and take appropriate action.
- Likely attacker skill level: Moderate.
- Required access or conditions: Authorized access.
- Business risk or urgency: High.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
An organization faces a command injection vulnerability in D-Link DIR-823X devices, specifically affecting firmware versions 240126 and 240802. This issue allows an authorized attacker to execute arbitrary commands by sending a POST request to a specific function. The United States Cybersecurity and Infrastructure Security Agency (CISA) has added this vulnerability to its Known Exploited Vulnerabilities catalog, indicating active exploitation and requiring prioritized attention.
- Identify all D-Link DIR-823X devices.
- Isolate affected devices from the network.
- Apply vendor fixes and monitor system activity.
