CVE-2019-16863 Information

Description

STMicroelectronics ST33TPHF2ESPI TPM devices before 2019-09-12 allow attackers to extract the ECDSA private key via a side-channel timing attack because ECDSA scalar multiplication is mishandled aka TPM-FAIL.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

http://tpm.fail https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV190024 https://support.f5.com/csp/article/K32412503?utm_source=f5support&utm_medium=RSS https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03972en_us https://support.lenovo.com/us/en/product_security/LEN-29406 https://www.st.com/content/st_com/en/campaigns/tpm-update.html

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9