Observable discrepancy in mbed TLS - CVE-2022-46392

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Main Vulnerability Database Vulnerabilities #VU97653

Observable discrepancy in mbed TLS - CVE-2022-46392

Published: September 23, 2024


Vulnerability identifier: #VU97653
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-46392
CWE-ID: CWE-203
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to recover an RSA private key.

The vulnerability exists due to observable discrepancy. A local user with access to local memory can recover an RSA private key after observing the victim performing a single private-key operation.


Affected software

mbed TLS
Gentoo Linux
Fedora
mbedtls
net-libs/mbedtls

How to mitigate CVE-2022-46392

Install updates from vendor's website.

mbed TLS - addressed in versions 2.28.2, 3.3.0
mbedtls - addressed in versions 2.28.2-1.el8, 2.28.2-1.el9, 2.28.2-1.fc36, 2.28.2-1.fc37
net-libs/mbedtls - update to 2.28.7

External References

Related Security Bulletins