Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.
{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "check-mk-agent",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-agent-logwatch",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-config-icinga",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-config-nagios3",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-livestatus",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-multisite",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        },
        {
            "binary_name": "check-mk-server",
            "binary_version": "1.2.6p12-1ubuntu0.16.04.1+esm1"
        }
    ]
}
          {
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "check-mk-agent",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        },
        {
            "binary_name": "check-mk-agent-logwatch",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        },
        {
            "binary_name": "check-mk-config-icinga",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        },
        {
            "binary_name": "check-mk-livestatus",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        },
        {
            "binary_name": "check-mk-multisite",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        },
        {
            "binary_name": "check-mk-server",
            "binary_version": "1.2.8p16-1ubuntu0.2"
        }
    ]
}