CVE-2022-46392

published 2022-12-15

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…

Priority P4 25 medium 5.3 CVSS 3.1

AV N AC H PR N UI R S U C H I N A N

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.

Affected

15 ranges

Vendor	Product	Version range	Fixed in
arm	mbed_tls	< 2.28.2	2.28.2
debian	mbedtls	< mbedtls 2.28.2-1 (bookworm)	mbedtls 2.28.2-1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
mbed	mbedtls	>= 0 < 2.16.9-0.1+deb11u1	2.16.9-0.1+deb11u1
mbed	mbedtls	>= 0 < 2.28.2-1	2.28.2-1
mbed	mbedtls	>= 0 < 2.28.2-1	2.28.2-1
mbed	mbedtls	>= 0 < 2.28.2-1	2.28.2-1
msrc	azl3_qemu_8.2.0-16_on_azure_linux_3.0	—	—
msrc	cbl2_fluent-bit_2.0.9-1_on_cbl_mariner_2.0	—	—
msrc	cbl2_qemu_6.2.0-24_on_cbl_mariner_2.0	—	—
msrc	cbl_mariner_2.0_arm	—	—
msrc	cbl_mariner_2.0_x64	—	—
msrc	cm1_fluent-bit_1.5.2-3_on_cbl_mariner_1.0	—	—
trustedfirmware	mbed_tls	>= 3.0.0 < 3.3.0	3.3.0

CVSS provenance

nvd v3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

osv 5.3 MEDIUM

vendor_debian 5.3 MEDIUM

vendor_msrc 5.3 MEDIUM

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