Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey.
CVSS Details
- CVSS 3.1 Base Score: 6.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Mar 17, 2019 | |
| Debian | debian-upgrade-libu2f-host | Feb 12, 2019 | Feb 11, 2019 | |
| Gentoo Linux | gentoo-linux-upgrade-app-crypt-libu2f-host | May 1, 2020 | Mar 21, 2019 | |
| Suse | — | suse-upgrade-libu2f-host-develsuse-upgrade-libu2f-host-docsuse-upgrade-libu2f-host0suse-upgrade-pam_u2fsuse-upgrade-u2f-host | Feb 19, 2019 | Feb 11, 2019 |
| Ubuntu | ubuntu-upgrade-libu2f-host | Nov 19, 2024 | Mar 21, 2019 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub