CVE - CVE-2002-20001

CVE-ID
CVE-2002-20001	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://dheatattack.gitlab.io/ MISC:https://ieeexplore.ieee.org/document/10374117 MISC:https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf URL:https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf MISC:https://dheatattack.com URL:https://dheatattack.com MISC:https://github.com/Balasys/dheater URL:https://github.com/Balasys/dheater MISC:https://github.com/mozilla/ssl-config-generator/issues/162 URL:https://github.com/mozilla/ssl-config-generator/issues/162 MISC:https://gitlab.com/dheatattack/dheater URL:https://gitlab.com/dheatattack/dheater MISC:https://support.f5.com/csp/article/K83120834 URL:https://support.f5.com/csp/article/K83120834 MISC:https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt URL:https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt MISC:https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ URL:https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ MISC:https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ URL:https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ MISC:https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol URL:https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol MISC:https://www.suse.com/support/kb/doc/?id=000020510 URL:https://www.suse.com/support/kb/doc/?id=000020510
Assigning CNA
MITRE Corporation
Date Record Created
20211111	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20211111)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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