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.
References
| Link | Resource |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf | Third Party Advisory |
| https://dheatattack.com | Third Party Advisory |
| https://dheatattack.gitlab.io/ | |
| https://github.com/Balasys/dheater | Product |
| https://github.com/mozilla/ssl-config-generator/issues/162 | Issue Tracking |
| https://gitlab.com/dheatattack/dheater | |
| https://ieeexplore.ieee.org/document/10374117 | |
| https://support.f5.com/csp/article/K83120834 | Third Party Advisory |
| https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt | Third Party Advisory |
| https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ | Third Party Advisory |
| https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ | Issue Tracking |
| https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol | Exploit Technical Description |
| https://www.suse.com/support/kb/doc/?id=000020510 | Third Party Advisory |
Configurations
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History
No history.
Information
Published : 2021-11-11 19:15
Updated : 2024-04-23 07:15
NVD link : CVE-2002-20001
Mitre link : CVE-2002-20001
CVE.ORG link : CVE-2002-20001
JSON object : View
Products Affected
f5
- big-ip_websafe
- big-ip_domain_name_system
- big-ip_application_security_manager
- big-ip_ddos_hybrid_defender
- big-ip_ssl_orchestrator
- big-ip_link_controller
- big-ip_local_traffic_manager
- big-ip_carrier-grade_nat
- big-ip_fraud_protection_service
- big-ip_global_traffic_manager
- big-ip_edge_gateway
- f5os-a
- big-ip_application_acceleration_manager
- traffix_signaling_delivery_controller
- big-ip_policy_enforcement_manager
- f5os-c
- big-ip_application_visibility_and_reporting
- big-ip_webaccelerator
- big-ip_advanced_web_application_firewall
- big-ip_access_policy_manager
- big-ip_analytics
- big-ip_service_proxy
- big-iq_centralized_management
- big-ip_advanced_firewall_manager
hpe
- aruba_cx_6405
- aruba_cx_8360-32y4c
- aruba_cx_8400
- aruba_cx_6200m
- aruba_cx_8325-48y8c
- aruba_cx_8360-12c
- arubaos-cx
- aruba_cx_8320
- aruba_cx_8360-24xf2c
- aruba_cx_6200f
- aruba_cx_8325-32c
- aruba_cx_6300m
- aruba_cx_6410
- aruba_cx_6300f
- aruba_cx_6100
- aruba_cx_8360-48xt4c
- aruba_cx_8360-48y6c
- aruba_cx_8360-16y2c
- aruba_cx_4100i
siemens
- scalance_w1750d
- scalance_w1750d_firmware
balasys
- dheater
stormshield
- stormshield_management_center
- stormshield_network_security
suse
- linux_enterprise_server
CWE
CWE-400
Uncontrolled Resource Consumption