7.5
HIGH
CVE-2002-20001
Cisco Router DHEater 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.

INFO

Published Date :

Nov. 11, 2021, 7:15 p.m.

Last Modified :

April 23, 2024, 7:15 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2002-20001 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2002-20001 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 F5 big-ip_access_policy_manager
2 F5 big-ip_advanced_firewall_manager
3 F5 big-ip_analytics
4 F5 big-ip_application_acceleration_manager
5 F5 big-ip_application_security_manager
6 F5 big-ip_domain_name_system
7 F5 big-ip_fraud_protection_service
8 F5 big-ip_global_traffic_manager
9 F5 big-ip_link_controller
10 F5 big-ip_local_traffic_manager
11 F5 big-ip_policy_enforcement_manager
12 F5 big-ip_advanced_web_application_firewall
13 F5 big-ip_ddos_hybrid_defender
14 F5 big-ip_ssl_orchestrator
15 F5 big-ip_websafe
16 F5 big-ip_edge_gateway
17 F5 big-ip_webaccelerator
18 F5 big-iq_centralized_management
19 F5 big-ip_carrier-grade_nat
20 F5 traffix_signaling_delivery_controller
21 F5 f5os-a
22 F5 big-ip_application_visibility_and_reporting
23 F5 big-ip_service_proxy
24 F5 f5os-c
1 Hpe arubaos-cx
2 Hpe aruba_cx_4100i
3 Hpe aruba_cx_6100
4 Hpe aruba_cx_6200f
5 Hpe aruba_cx_6200m
6 Hpe aruba_cx_6300f
7 Hpe aruba_cx_6300m
8 Hpe aruba_cx_6405
9 Hpe aruba_cx_6410
10 Hpe aruba_cx_8320
11 Hpe aruba_cx_8325-32c
12 Hpe aruba_cx_8325-48y8c
13 Hpe aruba_cx_8360-12c
14 Hpe aruba_cx_8360-16y2c
15 Hpe aruba_cx_8360-24xf2c
16 Hpe aruba_cx_8360-32y4c
17 Hpe aruba_cx_8360-48xt4c
18 Hpe aruba_cx_8360-48y6c
19 Hpe aruba_cx_8400
1 Stormshield stormshield_network_security
2 Stormshield stormshield_management_center
1 Siemens scalance_w1750d_firmware
2 Siemens scalance_w1750d
1 Suse linux_enterprise_server
1 Balasys dheater
: Total Affected Vendor : 6 | Products : 49
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2002-20001.

URL 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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
rikosintie/Links

None

Updated: 1 year, 8 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 24, 2022, 7:31 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
anquanscan/sec-tools

None

Updated: 1 week, 5 days ago
17 stars 5 fork 5 watcher
Born at : July 28, 2022, 3:22 a.m. This repo has been linked 149 different CVEs too.
Profile Photo
c0r0n3r/dheater

D(HE)ater is a proof of concept implementation of the D(HE)at attack (CVE-2002-20001) through which denial-of-service can be performed by enforcing the Diffie-Hellman key exchange. (read-only clone of the original GitLab project)

tls dhe diffie-hellman-algorithm denial-of-service overloading ssh attack security-tools ssl poc security ddos ddos-attack ddos-attack-tool ddos-tool diffie-hellman-groups diffie-hellman-key ddos-attack-tools dos-attack dos-attack-tool

Dockerfile Python

Updated: 1 week, 6 days ago
178 stars 27 fork 27 watcher
Born at : Aug. 31, 2021, 9:51 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
jtesta/ssh-audit

SSH server & client security auditing (banner, key exchange, encryption, mac, compression, compatibility, security, etc)

auditing security ssh

Python Shell Batchfile Dockerfile Roff

Updated: 1 week, 5 days ago
3313 stars 171 fork 171 watcher
Born at : Sept. 19, 2017, 7:24 p.m. This repo has been linked 3 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2002-20001 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2002-20001 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 23, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://ieeexplore.ieee.org/document/10374117 [No types assigned]
  • CVE Modified by [email protected]

    Jan. 11, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://dheatattack.gitlab.io/ [No types assigned]
  • CVE Modified by [email protected]

    Sep. 25, 2023

    Action Type Old Value New Value
    Changed 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)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. 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.
    Added Reference https://gitlab.com/dheatattack/dheater [No Types Assigned]
  • CPE Deprecation Remap by [email protected]

    Aug. 16, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:f5:traffix_sdc:5.1.0:*:*:*:*:*:*:* OR *cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.1.0:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Aug. 16, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:f5:traffix_sdc:5.2.0:*:*:*:*:*:*:* OR *cpe:2.3:a:f5:traffix_signaling_delivery_controller:5.2.0:*:*:*:*:*:*:*
  • Reanalysis by [email protected]

    Jul. 19, 2023

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:stormshield:stormshield_management_center:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.3 *cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:* versions from (including) 2.7.0 up to (excluding) 4.3.16 *cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:* versions from (including) 4.4.0 up to (excluding) 4.6.3
  • Modified Analysis by [email protected]

    May. 16, 2023

    Action Type Old Value New Value
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf Third Party Advisory
    Changed Reference Type https://dheatattack.com No Types Assigned https://dheatattack.com Third Party Advisory
    Changed Reference Type https://github.com/Balasys/dheater Third Party Advisory https://github.com/Balasys/dheater Product
    Changed Reference Type https://github.com/mozilla/ssl-config-generator/issues/162 Third Party Advisory https://github.com/mozilla/ssl-config-generator/issues/162 Issue Tracking
    Changed Reference Type https://support.f5.com/csp/article/K83120834 No Types Assigned https://support.f5.com/csp/article/K83120834 Third Party Advisory
    Changed Reference Type https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt No Types Assigned https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt Third Party Advisory
    Changed Reference Type https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ No Types Assigned https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ Third Party Advisory
    Changed Reference Type https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ Third Party Advisory https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ Issue Tracking
    Changed Reference Type https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol Exploit, Third Party Advisory https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol Exploit, Technical Description
    Changed Reference Type https://www.suse.com/support/kb/doc/?id=000020510 No Types Assigned https://www.suse.com/support/kb/doc/?id=000020510 Third Party Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:scalance_w1750d:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *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:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_service_proxy:1.6.0:*:*:*:*:kubernetes:*:* *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (including) 17.1.0 *cpe:2.3:a:f5:big-iq_centralized_management:7.1.0:*:*:*:*:*:*:* *cpe:2.3:a:f5:big-iq_centralized_management:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.0 *cpe:2.3:a:f5:f5os-a:1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:f5:f5os-a:1.3.1:*:*:*:*:*:*:* *cpe:2.3:a:f5:f5os-c:*:*:*:*:*:*:*:* versions from (including) 1.3.0 up to (including) 1.3.2 *cpe:2.3:a:f5:f5os-c:1.5.0:*:*:*:*:*:*:* *cpe:2.3:a:f5:f5os-c:1.5.1:*:*:*:*:*:*:* *cpe:2.3:a:f5:traffix_sdc:5.1.0:*:*:*:*:*:*:* *cpe:2.3:a:f5:traffix_sdc:5.2.0:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:* versions from (including) 10.06.0000 up to (excluding) 10.06.0180 *cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:* versions from (including) 10.07.0000 up to (excluding) 10.07.0030 *cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:* versions from (including) 10.08.0000 up to (excluding) 10.08.0010 *cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:* versions from (including) 10.09.0000 up to (excluding) 10.09.0002 OR cpe:2.3:h:hpe:aruba_cx_4100i:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6100:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6200f:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6200m:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6300f:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6300m:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6405:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_6410:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8320:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8325-32c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8325-48y8c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-12c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-16y2c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-24xf2c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-32y4c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-48xt4c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8360-48y6c:-:*:*:*:*:*:*:* cpe:2.3:h:hpe:aruba_cx_8400:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 09, 2022

    Action Type Old Value New Value
    Added Reference https://support.f5.com/csp/article/K83120834 [No Types Assigned]
    Added Reference https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ [No Types Assigned]
    Added Reference https://www.suse.com/support/kb/doc/?id=000020510 [No Types Assigned]
    Added Reference https://dheatattack.com [No Types Assigned]
    Added Reference https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 08, 2022

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 16, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/Balasys/dheater No Types Assigned https://github.com/Balasys/dheater Third Party Advisory
    Changed Reference Type https://github.com/mozilla/ssl-config-generator/issues/162 No Types Assigned https://github.com/mozilla/ssl-config-generator/issues/162 Third Party Advisory
    Changed Reference Type https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ No Types Assigned https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ Third Party Advisory
    Changed Reference Type https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol No Types Assigned https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol Exploit, Third Party Advisory
    Added CWE NIST CWE-400
    Added CPE Configuration OR *cpe:2.3:a:balasys:dheater:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 11, 2021

    Action Type Old Value New Value
    Added Reference https://github.com/mozilla/ssl-config-generator/issues/162 [No Types Assigned]
    Added Reference https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2002-20001 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2002-20001 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.17 }} 0.28%

score

0.85156

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: