CVE-2024-41996 | BDVDB-2026-246702 Detail
diffie-hellman_key_exchange_projectdiffie-hellman_key_exchange
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-295 Improper Certificate Validation
References#
- https://gist.github.com/c0r0n3r/abccc14d4d96c0442f3a77fa5ca255d1
- https://dheatattack.gitlab.io/details/
- https://dheatattack.gitlab.io/faq/
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
- https://cert-portal.siemens.com/productcert/html/ssa-485750.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.