CVE-2021-28484

https://notcve.org/view.php?id=CVE-2021-28484

An issue was discovered in the /api/connector endpoint handler in Yubico yubihsm-connector before 3.0.1 (in YubiHSM SDK before 2021.04). The handler did not validate the length of the request, which can lead to a state where yubihsm-connector becomes stuck in a loop waiting for the YubiHSM to send it data, preventing any further operations until the yubihsm-connector is restarted. An attacker can send 0, 1, or 2 bytes to trigger this. Se detectó un problema en el manejador de endpoint api/connector en Yubico yubihsm-connector versiones anteriores a 3.0.1 (en YubiHSM SDK versiones anteriores a 2021.04). El manejador no comprobó la longitud de la petición, lo que puede conllevar a un estado en el que yubihsm-connector se atasca en un bucle esperando a que YubiHSM le envíe datos, lo que impide cualquier otra operación hasta que yubihsm-connector es reiniciado. • https://github.com/Yubico/yubihsm-connector/releases https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B7Q2KGXSPQEEONAWMFZRVH2TXWX3QPCQ https://www.yubico.com/support/security-advisories/ysa-2021-02 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •