CVE ID:	CVE-2022-40735
Description:	The Diffie-Hellman Key Agreement Protocol allows use of long exponents that arguably make certain calculations unnecessarily expensive, because the 1996 van Oorschot and Wiener paper found that "(appropriately) short exponents" can be used when there are adequate subgroup constraints, and these short exponents can lead to less expensive calculations than for long exponents. This issue is different from CVE-2002-20001 because it is based on an observation about exponent size, rather than an observation about numbers that are not public keys. The specific situations in which calculation expense would constitute a server-side vulnerability depend on the protocol (e.g., TLS, SSH, or IKE) and the DHE implementation details. In general, there might be an availability concern because of server-side resource consumption from DHE modular-exponentiation calculations. Finally, it is possible for an attacker to exploit this vulnerability and CVE-2002-20001 together.
Test IDs:	1.3.6.1.4.1.25623.1.1.12.2024.6854.1
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2022-40735 https://dheatattack.gitlab.io/ https://gist.github.com/c0r0n3r/9455ddcab985c50fd1912eabf26e058b https://github.com/mozilla/ssl-config-generator/issues/162 https://ieeexplore.ieee.org/document/10374117 https://link.springer.com/content/pdf/10.1007/3-540-68339-9_29.pdf https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57pt1r5.pdf https://raw.githubusercontent.com/CVEProject/cvelist/9d7fbbcabd3f44cfedc9e8807757d31ece85a2c6/2022/40xxx/CVE-2022-40735.json https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol/links/546c144f0cf20dedafd53e7e/Security-Issues-in-the-Diffie-Hellman-Key-Agreement-Protocol.pdf https://www.rfc-editor.org/rfc/rfc3526 https://www.rfc-editor.org/rfc/rfc4419 https://www.rfc-editor.org/rfc/rfc5114#section-4 https://www.rfc-editor.org/rfc/rfc7919#section-5.2