CVEvulnerability
CVE-2024-41996
7.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2024-08-26
- Last modified
- 2026-10-15
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-295
Description
Validating the order of the public keys in the Diffie-Hellman Key Agreement Protocol, when an approved safe prime is used, allows remote attackers (from the client side) to trigger unnecessarily expensive server-side DHE modular-exponentiation calculations. The client may cause asymmetric resource consumption. 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 and validate the order of the public key.
Related
Weakness · CWE (1)
- CWE-295 Improper Certificate Validation weakness
References
- https://dheatattack.gitlab.io/details/ dheatattack.gitlab.io
- https://dheatattack.gitlab.io/faq/ dheatattack.gitlab.io
- https://gist.github.com/c0r0n3r/abccc14d4d96c0442f3a77fa5ca255d1 gist.github.com
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html cert-portal.siemens.com
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html cert-portal.siemens.com
- https://cert-portal.siemens.com/productcert/html/ssa-485750.html cert-portal.siemens.com