Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://dheatattack.gitlab.io/details/
- https://dheatattack.gitlab.io/faq/
- https://gist.github.com/c0r0n3r/abccc14d4d96c0442f3a77fa5ca255d1
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-485750.html
FAQ
What is CVE-2024-41996?
CVE-2024-41996 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 expen...
How severe is CVE-2024-41996?
CVE-2024-41996 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-41996?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.