External risk intelligence

D-Link Router Command Injection Vulnerability

CVE advisoryKnown Exploit

CVE-2018-6530

Certain D-Link routers are affected by an OS command injection vulnerability, allowing remote attackers to execute arbitrary commands. This exposes affected organizations to unauthorized system access and control. The realistic business risk includes potential network compromise and disruption.

5Halo Surface Signal

OS Command Injection

Dlink Dir 860l Firmware

1.10b04 and earlier1.08b01 and earlier1.12b04 and earlier1.08b04 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2018-6530

The vulnerability exists in the SOAP interface of internet-facing home and small office routers. These devices are designed to provide network services and gateway functionality, making their management interfaces or service endpoints accessible from the public internet by design or common deployment patterns for remote management and service discovery.

Horizon Alert

Summary of the vulnerability and why it matters

Certain D-Link routers have a security vulnerability that allows remote attackers to execute unauthorized commands. This occurs through the device's SOAP interface, potentially enabling attackers to compromise the system. The impact could involve unauthorized access and control over the affected network devices.

  • Vulnerable D-Link routers
  • OS command injection flaw
  • Unauthorized system access

Attack Path

How an attacker could exploit the issue

An OS command injection vulnerability exists within the SOAP interface of certain D-Link routers. Attackers can exploit this by sending a crafted request to the router's service endpoint. This allows them to execute arbitrary operating system commands on the affected device.

  • Network exposure required.
  • Attacker sends a crafted request.
  • Arbitrary OS commands are executed.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability allows remote attackers to execute arbitrary operating system commands on affected D-Link routers. Exploitation requires no special access or conditions and can be performed over the network. The potential impact includes full system compromise, allowing attackers to control the device, disrupt network operations, or use it as a pivot point for further attacks. Given its high severity and ease of exploitation, this CVE presents a significant business risk.

  • Likely attacker skill level: Basic
  • Required access or conditions: Network access
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability allows remote attackers to execute arbitrary operating system commands on affected D-Link devices. The identified risk stems from the potential for unauthorized command execution via the device's SOAP interface. Organizations should prioritize addressing this risk to maintain system integrity and prevent further compromise.

  • Identify exposed D-Link devices.
  • Isolate affected devices from the network.
  • Apply vendor-provided firmware updates.
  • Validate successful update implementation.
  • Monitor for related security events.

Frequently asked questions

What are D-Link DIR-860L, DIR-865L, DIR-868L, and DIR-880L routers used for?

These D-Link router models are home and small office networking devices that provide internet connectivity, network management, and gateway services.

What is the weakness in CVE-2018-6530?

CVE-2018-6530 is an OS command injection vulnerability. This means an attacker can trick the router into running unintended operating system commands.

How can an attacker exploit this D-Link router vulnerability?

An attacker can exploit this by sending a specially crafted request to the router's SOAP interface. No special access or conditions are required beyond network access.

Who should care about CVE-2018-6530's relevance?

Organizations with internet-facing D-Link routers should care. The Halo Surface Signal indicates these devices are very likely exposed to the internet, making them targets for remote attackers.

What is the first step to address this vulnerability?

The first step is to identify if any of the affected D-Link router models are in use and exposed. If so, applying vendor-provided firmware updates is crucial.

References