Vulnerability in Yubico Libu2f-Host

CVE-2019-9578

In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.

EPSS: 0.023 (81.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-9578?
CVE-2019-9578 is a high-severity vulnerability in Yubico Libu2f-Host, classified under Use of Uninitialized Resource. CVSS score: 7.5/10. Published 2019-03-05.
How severe is CVE-2019-9578?
High severity. CVSS v3 base score is 7.5 out of 10.