Vulnerability in St St33tphf20i2c
CVE-2019-16863
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.034 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.034 · change: +0.001
Affected products
- St St33tphf20i2c
- St St33tphf20i2c Firmware — versions 74.5, 74.9
- St St33tphf20spi
- St St33tphf20spi Firmware — versions 74.0, 74.4, 74.8
- St St33tphf2ei2c
- St St33tphf2ei2c Firmware — versions 73.5, 73.9
- St St33tphf2espi
- St St33tphf2espi Firmware — versions 71.0, 71.4, 71.12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tpm.fail (Third Party Advisory)
- support.f5.com/csp/article/K32412503
- support.hpe.com/hpsc/doc/public/display (Third Party Advisory)
- support.lenovo.com/us/en/product_security/LEN-29406 (Third Party Advisory)
- www.st.com/content/st_com/en/campaigns/tpm-update.html (Vendor Advisory)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV190024 (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16863?
- CVE-2019-16863 is a medium-severity vulnerability in St St33tphf20i2c, classified under Observable Discrepancy. CVSS score: 5.9/10. Published 2019-11-14.
- How severe is CVE-2019-16863?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2019-16863 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.