libu2f-host0: Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buff...
CVE-2018-20340 is fixed in 3 products on 1 platform, first by libu2f-host0 1.1.4-1ubuntu0.1, released February 8, 2019. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libu2f-host0 · Ubuntu 18.04.6 LTS (bionic) | 1.1.4-1ubuntu0.1 | libu2f-host0 1.1.4-1ubuntu0.1 | Feb 8, 2019 |
| libu2f-udev · Ubuntu 18.04.6 LTS (bionic) | 1.1.4-1ubuntu0.1 | libu2f-udev 1.1.4-1ubuntu0.1 | Feb 8, 2019 |
| u2f-host · Ubuntu 18.04.6 LTS (bionic) | 1.1.4-1ubuntu0.1 | u2f-host 1.1.4-1ubuntu0.1 | Feb 8, 2019 |
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