The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.

Threat-Mapped Scoring

Score: 1.8

Priority: P4 - Informational (Low)

• S9 – Sabotage of System/App

EPSS

Score: 0.1468
Percentile: 0.94161

CVSS Scoring

Mapped CWE(s)

• CWE-400 : Uncontrolled Resource Consumption

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

• T1499 : Endpoint Denial of Service
  Kill Chain: impact

Malware

APTs Threat Group Associations

Campaigns

Affected Products

• cpe:2.3:a:balasys:dheater:-:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:15:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_service_proxy:1.6.0:*:*:*:*:kubernetes:*:*
• cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-iq_centralized_management:*:*:*:*:*:*:*:*
• cpe:2.3:a:f5:big-iq_centralized_management:7.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.2.0:*:*:*:*:*:*:*
• cpe:2.3:o:f5:f5os-a:1.3.0:*:*:*:*:*:*:*
• cpe:2.3:o:f5:f5os-a:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:o:f5:f5os-c:*:*:*:*:*:*:*:*
• cpe:2.3:o:f5:f5os-c:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:o:f5:f5os-c:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*
• cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*
• cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*
• cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*
• cpe:2.3:a:stormshield:stormshield_management_center:*:*:*:*:*:*:*:*
• cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*
• cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*

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