Published: 09 December 2016
** DISPUTED ** The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."
CVSS 3 base score: 7.5
Launchpad, Ubuntu, Debian
|Ubuntu 16.04 ESM (Xenial Xerus)||
|Ubuntu 14.04 ESM (Trusty Tahr)||
DoS is limited to attacker's connection only, and openssh upstream does not consider this to be a security issue We do not consider this to be a security issue either, marking as ignored