Input validation error in YubiKey Validation Server - #VU25760
Published: March 4, 2020
Vulnerability identifier: #VU25760
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the verify and sync APIs. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
YubiKey Validation Server
Remediation
Install updates from vendor's website.
YubiKey Validation Server - update to 2.40