Adversaries may target the Management Information Base (MIB) to collect and/or mine valuable information in a network managed using Simple Network Management Protocol (SNMP).
The MIB is a configuration repository that stores variable information accessible via SNMP in the form of object identifiers (OID). Each OID identifies a variable that can be read or set and permits active management tasks, such as configuration changes, through remote modification of these variables. SNMP can give administrators great insight in their systems, such as, system information, description of hardware, physical location, and software packages(Citation: SANS Information Security Reading Room Securing SNMP Securing SNMP). The MIB may also contain device operational information, including running configuration, routing table, and interface details.
Adversaries may use SNMP queries to collect MIB content directly from SNMP-managed devices in order to collect network information that allows the adversary to build network maps and facilitate future targeted exploitation.(Citation: US-CERT-TA18-106A)(Citation: Cisco Blog Legacy Device Attacks)
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| I&S-03 | Network Security | mitigates | T1602.001 | SNMP (MIB Dump) |
Comments
This control provides for monitoring, encrypting, and restricting communications between environments. Configuring SNMPv3 to use the highest level of security (authPriv) available and applying extended ACLs to block unauthorized protocols outside the trusted network can protect configuration repositories. In addition, network intrusion prevention devices can be configured to block SNMP queries and commands from unauthorized sources.
References
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| I&S-06 | Segmentation and Segregation | mitigates | T1602.001 | SNMP (MIB Dump) |
Comments
This control provides for appropriately segmented and segregated cloud environments. Access controls, firewalls, and cloud-based segmentation can be used to isolate and protect configuration repositories. In addition, network intrusion prevention devices can be configured to block SNMP queries and commands from unauthorized sources.
References
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| I&S-09 | Network Defense | mitigates | T1602.001 | SNMP (MIB Dump) |
Comments
This control provides for the implementation of defense-in-depth network security controls for securing the cloud environment. Access controls, firewalls, and cloud-based segmentation can be used to isolate and protect configuration repositories. In addition, network intrusion prevention devices can be configured to block SNMP queries and commands from unauthorized sources.
References
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