Types of Insecure Systems

Insecure Systems are sorted into the following categories:

Category Explanation of Risks Examples of Systems in this Category
Debug Firmware Detected

Explanation:

Systems in this category are mobile devices that have rootkit capabilities disguised as a debug tool, and are reaching out to unregistered domains.

[1] [2]

Risks:

  • Domain owners can push new firmware versions, hence controlling/hijacking the mobile device.
  • Firmware can send out unauthorized detailed information about the device.
Mobile Firmware
File Sharing

Explanation:

Systems in this category are reaching out to abandoned torrent tracker domains for information about files to download via BitTorrent.

Learn more about File Sharing trackers.

Risks:

  • Attackers can set up false trackers and inject false information.
  • Trackers can instruct clients to fetch files from an arbitrary list of systems, with false or dangerous content.
  • Expired Torrent Tracker
  • Gnutella Domains
Proxy Configurations

Explanation:

Systems in this category are using an abandoned domain for proxy configuration.

[3] [4]

Risks:

  • Domain owners can control browser navigation when proxies are used.
  • Expired internal domains may have other severe implications.
Misconfigured Proxy Domains
NetBios

Explanation:

Systems in this category are reaching out to Windows NetBios networks via an abandoned domain.

[5] [6]

Risks:

  • Windows/NetBios connections represent a vulnerability because the NetBios protocol has known security vulnerabilities and is a common attack target.
  • Domain owners can interact with endpoints, potentially hijacking Windows Challenge/Response (NTLM) authentication credentials.
Windows NetBios
Abandoned Software

Explanation:

Systems in this category have applications which are either no longer maintained (the software has been “abandoned”* by its developers) or are communicating to the wrong servers; in either case, there is software present that is reaching out to an unregistered domain.

Risks:

  • The app sends detailed information regarding how the device is being used, which could be used by attackers to gain access to the device.
  • Domain owners could potentially leverage app functionalities to exfiltrate more information or gain a certain level of control over the device.
  • Go Contacts Pro
  • Auto Words With Friends Cheats
  • Itiva Internet Accelerator
IPTV

Explanation:

Systems in this category are smart TV systems and other media systems that are reaching out to abandoned domains*.

Risks:

Endpoint** is reaching out to unused IPTV platform related services, which may allow attackers to capture endpoint data.

  • Abandoned IPTV platform.
  • Abandoned live TV add-on.
  • Abandoned media hub.
  • Abandoned swarmcast media.
Remote Management

Explanation:

Systems in this category involve either software that is responsible for automatically providing updates, or network or other hardware used in business environments, that is reaching out to abandoned domains*.

Risks:

  • Attackers can potentially interact with endpoint** devices, simulating the endpoint management solution.
  • Endpoints will not be able to install security and firmware updates, since they cannot reach the intended service, and may remain vulnerable to a number of attacks.
  • Symantec Patch Management
  • McAfee Corporate Antivirus
  • McAfee ePolicy Orchestrator
  • Microsoft Server Update Services
  • Symantec Endpoint Protection Manager
  • Honeywell HVAC Controllers
  • My DLink Service
  • TR-069 Protocol
  • Citrix Receiver PN Agent
LDAP

Explanation:

Systems in this category have Lightweight Directory Access Protocol (LDAP) services running, which are used to manage information about an organization's employees, systems, and applications in the network; these services are reaching out to abandoned domains*.

Risks:

Attackers that hijack the abandoned domains may be able to interact with endpoints**, and obtain sensitive information.

Expired Windows LDAP Domains
SMB

Explanation:

Systems in this category are reaching out to Windows NetBios networks via abandoned domains*.

[5] [6]

Risks:

  • Windows/ NetBios connections represent a vulnerability because the NetBios protocol has known security vulnerabilities and is a common attack target.
  • Domain owners can interact with endpoints**, potentially hijacking Windows Challenge/Response (NTLM) authentication credentials.
 

* “Abandoned domains” are no longer registered to anyone. They may have been abandoned if the manufacturer/developer shut down or it slipped the domain owner's attention.
** “Endpoints” refer to desktop computers, servers, or handheld devices that have internet access.

  • July 17, 2018: Published.
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