UBUNTU-CVE-2018-7184

ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

References

Affected packages

Ubuntu:18.04:LTS / ntp

Package

Name: ntp
Purl: pkg:deb/ubuntu/ntp@1:4.2.8p10+dfsg-5ubuntu7.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:4.2.8p10+dfsg-5ubuntu7.1

Affected versions

1:4.*

1:4.2.8p10+dfsg-5ubuntu3

1:4.2.8p10+dfsg-5ubuntu4

1:4.2.8p10+dfsg-5ubuntu5

1:4.2.8p10+dfsg-5ubuntu6

1:4.2.8p10+dfsg-5ubuntu7

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "ntp-dbgsym",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "ntp-doc",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "ntpdate",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "ntpdate-dbgsym",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "sntp",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        },
        {
            "binary_name": "sntp-dbgsym",
            "binary_version": "1:4.2.8p10+dfsg-5ubuntu7.1"
        }
    ]
}