Vulnerabilites related to balasys - dheater
Vulnerability from fkie_nvd
Published
2021-11-11 19:15
Modified
2025-08-22 10:33
Severity ?
Summary
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
Impacted products
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CVE-2002-20001 (GCVE-0-2002-20001)
Vulnerability from cvelistv5
Published
2021-11-11 00:00
Modified
2025-02-13 16:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
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.
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