Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2002-20001

Disclosure Date: November 11, 2021 •
CVE-2002-20001 CVSS v3 Base Score: 7.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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.

Add Assessment

No one has assessed this topic. Be the first to add your voice to the community.

CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • balasys,
  • f5,
  • hpe,
  • siemens,
  • stormshield,
  • suse

Products

  • arubaos-cx,
  • big-ip access policy manager,
  • big-ip advanced firewall manager,
  • big-ip advanced web application firewall,
  • big-ip analytics,
  • big-ip application acceleration manager,
  • big-ip application security manager,
  • big-ip application visibility and reporting,
  • big-ip carrier-grade nat,
  • big-ip ddos hybrid defender,
  • big-ip domain name system,
  • big-ip edge gateway,
  • big-ip fraud protection service,
  • big-ip global traffic manager,
  • big-ip link controller,
  • big-ip local traffic manager,
  • big-ip policy enforcement manager,
  • big-ip service proxy 1.6.0,
  • big-ip ssl orchestrator,
  • big-ip webaccelerator,
  • big-ip websafe,
  • big-iq centralized management,
  • big-iq centralized management 7.1.0,
  • dheater -,
  • f5os-a 1.3.0,
  • f5os-a 1.3.1,
  • f5os-c,
  • f5os-c 1.5.0,
  • f5os-c 1.5.1,
  • linux enterprise server 11,
  • linux enterprise server 12,
  • linux enterprise server 15,
  • scalance w1750d firmware,
  • stormshield management center,
  • stormshield network security,
  • traffix signaling delivery controller 5.1.0,
  • traffix signaling delivery controller 5.2.0
Technical Analysis