The following CVEs were reported against yubikey-val.
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.
The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP.
For Debian 8 Jessie
, these problems have been fixed in version
2.27-1+deb8u1.
We recommend that you upgrade your yubikey-val packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS