External risk intelligence

MikroTik RouterOS File Access Vulnerability.

CVE advisoryKnown Exploit

CVE-2018-14847

MikroTik RouterOS versions up to 6.42 have a directory traversal vulnerability in the WinBox interface, allowing unauthenticated attackers to read arbitrary files and authenticated attackers to write arbitrary files. This impacts organizational data and system security.

5Halo Surface Signal

Path Traversal

Mikrotik Routeros

6.42 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2018-14847

The vulnerability affects the WinBox interface of MikroTik RouterOS. This interface is a primary management tool for network routers, which are internet-facing by design. As a gateway appliance, the management interface is commonly exposed to the network to facilitate remote administration, making it a pre-auth or remotely accessible service in standard deployment patterns.

Horizon Alert

Summary of the vulnerability and why it matters

MikroTik RouterOS, specifically versions up to 6.42, contains a directory traversal vulnerability within its WinBox interface. This flaw enables unauthenticated remote attackers to access and read any file on the system. Additionally, authenticated attackers can exploit this weakness to write arbitrary files. The exploitation of this vulnerability poses a significant risk to organizational data integrity and system security.

  • Vulnerable: MikroTik RouterOS WinBox interface
  • Flaw: Directory traversal
  • Impact: Arbitrary file read/write

Attack Path

How an attacker could exploit the issue

A directory traversal vulnerability exists in the WinBox interface of MikroTik RouterOS. This allows attackers to read or write arbitrary files. The vulnerability enables unauthorized access to sensitive information or system modifications.

  • Unauthenticated network access required.
  • Attacker exploits WinBox interface.
  • Arbitrary file read/write occurs.

Live Threat

Current exploitation, exposure, and threat context

A directory traversal vulnerability exists in the WinBox interface of MikroTik RouterOS. This allows unauthenticated remote attackers to read arbitrary files from the affected system, and authenticated remote attackers to write arbitrary files. The potential for unauthorized access and modification of system files presents a significant risk to business operations. Organizations should treat this vulnerability with high urgency due to its potential impact.

  • Attackers require no special skill.
  • No special access is required.
  • Significant business risk and urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Organizations should take immediate action regarding a directory traversal vulnerability in MikroTik RouterOS affecting versions up to 6.42. This vulnerability allows unauthenticated remote attackers to read arbitrary files and authenticated attackers to write arbitrary files through the WinBox interface, posing a significant risk to business operations and data integrity. The exploitability is high, with network-level access and no privileges required for reading files.

  • Identify MikroTik devices running affected RouterOS versions.
  • Restrict WinBox access to trusted internal networks.
  • Apply vendor updates, verify fixes, and monitor network activity.

Frequently asked questions

What is MikroTik RouterOS and its primary function?

MikroTik RouterOS is the operating system for MikroTik network devices. It is designed for building and managing network routers and wireless systems, providing core functionalities for routing, firewalling, and wireless access point operations.

What type of weakness does CVE-2018-14847 represent?

CVE-2018-14847 is a directory traversal vulnerability. This weakness allows unauthorized access to files and directories outside of the intended scope.

How can CVE-2018-14847 be exploited?

Attackers can exploit this vulnerability through the WinBox interface of MikroTik RouterOS. Unauthenticated attackers can read any file, while authenticated attackers can write files on the system.

Why is CVE-2018-14847 considered relevant for network security?

The Halo Surface Signal indicates this vulnerability is very likely to be exploited because it affects the WinBox interface, a common management tool for internet-facing routers. This interface is often exposed to networks for remote administration, making it an accessible attack vector.

What steps should be taken to address the MikroTik RouterOS vulnerability?

Organizations should identify affected MikroTik devices, restrict WinBox access to trusted networks, and apply vendor-provided updates. Monitoring network activity for suspicious behavior is also recommended after applying fixes.

References