vulnerability
Ubuntu: (CVE-2024-41996): openssl vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Aug 26, 2024 | Jun 26, 2025 | Aug 18, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Aug 26, 2024
Added
Jun 26, 2025
Modified
Aug 18, 2025
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.
Solution
no-fix-ubuntu-package
References
- CVE-2024-41996
- https://attackerkb.com/topics/CVE-2024-41996
- CWE-295
- URL-https://dheatattack.gitlab.io/details/
- URL-https://dheatattack.gitlab.io/faq/
- URL-https://gist.github.com/c0r0n3r/abccc14d4d96c0442f3a77fa5ca255d1
- URL-https://github.com/openssl/openssl/pull/25088
- URL-https://www.cve.org/CVERecord?id=CVE-2024-41996
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