Unchecked Buffers in Yubico libu2f-host 1.1.6: Exploiting Buffer Overflow via USB Device

CVE-2018-20340 · MEDIUM Severity

AV:L/AC:L/AU:N/C:P/I:P/A:P

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.

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