CVE-2022-46392

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
mitreCNA
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CVEADP
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CISA-ADPADP
5.3 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 29%
VendorProductVersion
armmbed_tls
𝑥
< 2.28.2
armmbed_tls
3.0.0 ≤
𝑥
< 3.3.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mbedtls
bullseye
no-dsa
buster
postponed
bookworm
2.28.3-1
fixed
trixie
2.28.8-1
fixed
sid
3.6.2-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mbedtls
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
ignored