CVE-2024-41996

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 37%
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Ubuntu Releases
Ubuntu Product
Codename
edk2
plucky
needs-triage
oracular
needs-triage
noble
needs-triage
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
nodejs
plucky
not-affected
oracular
not-affected
noble
not-affected
jammy
needs-triage
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
openssl
plucky
not-affected
oracular
needed
noble
needed
jammy
needed
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
openssl1.0
plucky
dne
oracular
dne
noble
dne
jammy
dne
focal
dne
bionic
not-affected