Information Disclosure Vulnerability in Mbed TLS by ARM
CVE-2022-46392

5.3MEDIUM

Key Information:

Vendor
Arm
Status
Mbed Tls
Vendor
CVE Published:
15 December 2022

Summary

A vulnerability has been discovered in Mbed TLS versions prior to 2.28.2 and 3.x prior to 3.3.0. This issue allows an attacker who has precise knowledge of memory accesses, such as an untrusted operating system targeting a secure enclave, to potentially recover an RSA private key after monitoring a single private-key operation. This risk arises when the window size configuration (MBEDTLS_MPI_WINDOW_SIZE) used during exponentiation is set to 3 or smaller.

References

https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.3.0
https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.2
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.