The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service with a non-default configuration such as an open sync pool; the issue does NOT affect YubiCloud.
📦
yubikey_one_time_password_validation_server
Vendor: yubico
Actively Exploited
0
CISA KEV List
PoC / Exploits
0
Code Available
Total RCEs
0
Remote Access
Total CVEs
4
Total Indexed
Avg. EPSS
1.48%
Exploit Prob.
Security Vulnerability Index
Page 1 / 1
8.6
CVSS
Severity: HIGH
7.5
CVSS
The verify endpoint in YubiKey Validation Server before 2.40 does not check the length of SQL queries, which allows remote attackers to cause a denial of service, aka SQL injection. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service; the issue does NOT affect YubiCloud.
Severity: HIGH