CVE-2002-20001
7.5 · HIGHOverview
CVE-2002-20001 is a high-severity vulnerability affecting balasys dheater. It was published on November 11, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from balasys. Update dheater to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| f5 | big-ip_access_policy_manager | >= 13.1.0, < 16.1.4 | Affected |
| f5 | big-ip_advanced_firewall_manager | 13.1.0 | Affected |
| f5 | big-ip_advanced_web_application_firewall | 13.1.0 | Affected |
| f5 | big-ip_analytics | 13.1.0 | Affected |
| f5 | big-ip_application_acceleration_manager | 13.1.0 | Affected |
| f5 | big-ip_application_security_manager | 13.1.0 | Affected |
| f5 | big-ip_application_visibility_and_reporting | 13.1.0 | Affected |
| f5 | big-ip_carrier-grade_nat | 13.1.0 | Affected |
| f5 | big-ip_ddos_hybrid_defender | 13.1.0 | Affected |
| f5 | big-ip_domain_name_system | 13.1.0 | Affected |
| f5 | big-ip_edge_gateway | 13.1.0 | Affected |
| f5 | big-ip_fraud_protection_service | 13.1.0 | Affected |
| f5 | big-ip_global_traffic_manager | 13.1.0 | Affected |
| f5 | big-ip_link_controller | 13.1.0 | Affected |
| f5 | big-ip_local_traffic_manager | 13.1.0 | Affected |
| f5 | big-ip_policy_enforcement_manager | 13.1.0 | Affected |
References
Frequently Asked Questions
What is CVE-2002-20001?
CVE-2002-20001 is a high-severity vulnerability affecting balasys dheater. It was published on November 11, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2002-20001?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2002-20001?
Check the references section for vendor advisories and patches from balasys. Update dheater to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2002-20001?
CyberStrike's AI-powered security agents can automatically detect CVE-2002-20001 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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