cve-2022-40735
Vulnerability from cvelistv5
Published
2022-11-14 00:00
Modified
2024-08-03 12:28
Severity ?
Summary
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.
References
cve@mitre.orghttps://dheatattack.gitlab.io/
cve@mitre.orghttps://gist.github.com/c0r0n3r/9455ddcab985c50fd1912eabf26e058bThird Party Advisory
cve@mitre.orghttps://github.com/mozilla/ssl-config-generator/issues/162Issue Tracking, Third Party Advisory
cve@mitre.orghttps://ieeexplore.ieee.org/document/10374117
cve@mitre.orghttps://link.springer.com/content/pdf/10.1007/3-540-68339-9_29.pdfTechnical Description, Third Party Advisory
cve@mitre.orghttps://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57pt1r5.pdfTechnical Description, Third Party Advisory, US Government Resource
cve@mitre.orghttps://raw.githubusercontent.com/CVEProject/cvelist/9d7fbbcabd3f44cfedc9e8807757d31ece85a2c6/2022/40xxx/CVE-2022-40735.json
cve@mitre.orghttps://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.pdfTechnical Description, Third Party Advisory
cve@mitre.orghttps://www.rfc-editor.org/rfc/rfc3526
cve@mitre.orghttps://www.rfc-editor.org/rfc/rfc4419
cve@mitre.orghttps://www.rfc-editor.org/rfc/rfc5114#section-4
cve@mitre.orghttps://www.rfc-editor.org/rfc/rfc7919#section-5.2
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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