CVE-2002-20001

Katalog CVE

CVSS 7.5 · High EPSS 24,6%

Kerentanan Uncontrolled Resource Consumption pada balasys dheater, siemens scalance w1750d firmware +26 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

11 November 2021

Terakhir diubah

23 September 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

24,6% peluang dieksploitasi; lebih tinggi dari 97,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD. Ditampilkan 60 dari 64 konfigurasi; daftar lengkap ada di NVD.

Referensi dan perbaikan

• https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf advisory pihak ketiga
• https://dheatattack.com advisory pihak ketiga
• https://dheatattack.gitlab.io/ advisory pihak ketiga
• https://github.com/Balasys/dheater product · advisory pihak ketiga
• https://gitlab.com/dheatattack/dheater advisory pihak ketiga
• https://ieeexplore.ieee.org/document/10374117 deskripsi teknis · advisory pihak ketiga
• https://support.f5.com/csp/article/K83120834 advisory pihak ketiga
• https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt deskripsi teknis · advisory pihak ketiga
• https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/ advisory pihak ketiga
• https://www.suse.com/support/kb/doc/?id=000020510 advisory pihak ketiga
• https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman... exploit · deskripsi teknis
• https://github.com/mozilla/ssl-config-generator/issues/162 issue tracking
• https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/ issue tracking