Ubuntu.comUB:CVE-2018-20340CVE-2018-20340
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
56.7%
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.
Bugs
Notes
| Author | Note |
|---|---|
| sbeattie | requires libpam-u2f setup or other yubikey based software applications. Browser U2F implmentations are NOT affected. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | libu2f-host | < 1.1.4-1ubuntu0.1 | UNKNOWN |
| ubuntu | 18.10 | noarch | libu2f-host | < 1.1.6-1ubuntu0.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | libu2f-host | < any | UNKNOWN |
Related
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
56.7%