CAPEC-290: Enumerate Mail Exchange (MX) Records
An adversary enumerates the MX records for a given via a DNS query. This type of information gathering returns the names of mail servers on the network. Mail servers are often not exposed to the Internet but are located within the DMZ of a network protected by a firewall. A side effect of this configuration is that enumerating the MX records for an organization my reveal the IP address of the firewall or possibly other internal systems. Attackers often resort to MX record enumeration when a DNS Zone Transfer is not possible.
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Overview
CAPEC-290 (Enumerate Mail Exchange (MX) Records) is a detailed-level attack pattern catalogued by MITRE in the Common Attack Pattern Enumeration and Classification (CAPEC). It describes a recurring method attackers use to exploit software weaknesses.
What the attacker needs
Prerequisites
- The adversary requires access to a DNS server that will return the MX records for a network.
Resources required
- A command-line utility or other application capable of sending requests to the DNS server is necessary.
Consequences
What a successful CAPEC-290 attack can achieve.
Other
Affects: Confidentiality
Bypass Protection Mechanism, Hide Activities
Affects: Confidentiality, Access Control, Authorization