PoC Index

CVE-2002-20001

HIGH 7.5EPSS 23.1%

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.

CVSS v3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
23.06% chance of exploitation in the next 30 days, 98th percentile
Published
2021-11-11
Updated
2025-02-13

Proof-of-concept exploits (2)

References

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