#VU17735 Buffer overflow in libu2f-host - CVE-2018-20340 

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Main Vulnerability Database Vulnerabilities #VU17735

#VU17735 Buffer overflow in libu2f-host - CVE-2018-20340

Published: February 18, 2019


Vulnerability identifier: #VU17735
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-20340
CWE-ID: CWE-120
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
libu2f-host
Software vendor:
Yubico

Description

The vulnerability allows a physical attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. An attacker with a custom made malicious USB device masquerading as a security key, and physical access to a computer where PAM U2F or an application with libu2f-host integrated can trigger buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Update to version 1.1.7.

External links