UBUNTU-CVE-2016-4955

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Source

https://ubuntu.com/security/CVE-2016-4955

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4955.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-4955

Related

Published

2016-07-04T00:00:00Z

Modified

2016-07-04T00:00:00Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
4.0 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L CVSS Calculator

Summary

[none]

Details

ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.

References

Affected packages

Ubuntu:14.04:LTS / ntp

Package

Name: ntp
Purl: pkg:deb/ubuntu/ntp?arch=src?distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:4.2.6.p5+dfsg-3ubuntu2.14.04.10

Affected versions

1:4.*

1:4.2.6.p5+dfsg-3ubuntu2

1:4.2.6.p5+dfsg-3ubuntu2.14.04.1

1:4.2.6.p5+dfsg-3ubuntu2.14.04.2

1:4.2.6.p5+dfsg-3ubuntu2.14.04.3

1:4.2.6.p5+dfsg-3ubuntu2.14.04.5

1:4.2.6.p5+dfsg-3ubuntu2.14.04.6

1:4.2.6.p5+dfsg-3ubuntu2.14.04.7

1:4.2.6.p5+dfsg-3ubuntu2.14.04.8

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
            "binary_name": "ntp"
        },
        {
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
            "binary_name": "ntp-dbgsym"
        },
        {
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
            "binary_name": "ntp-doc"
        },
        {
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
            "binary_name": "ntpdate"
        },
        {
            "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.10",
            "binary_name": "ntpdate-dbgsym"
        }
    ]
}

Ubuntu:16.04:LTS / ntp

Package

Name: ntp
Purl: pkg:deb/ubuntu/ntp?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:4.2.8p4+dfsg-3ubuntu5.3

Affected versions

1:4.*

1:4.2.6.p5+dfsg-3ubuntu8

1:4.2.6.p5+dfsg-3ubuntu8.1

1:4.2.6.p5+dfsg-3ubuntu9

1:4.2.8p4+dfsg-3ubuntu1

1:4.2.8p4+dfsg-3ubuntu2

1:4.2.8p4+dfsg-3ubuntu3

1:4.2.8p4+dfsg-3ubuntu4

1:4.2.8p4+dfsg-3ubuntu5

1:4.2.8p4+dfsg-3ubuntu5.1

1:4.2.8p4+dfsg-3ubuntu5.2

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.3",
            "binary_name": "ntp"
        },
        {
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.3",
            "binary_name": "ntp-dbgsym"
        },
        {
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.3",
            "binary_name": "ntp-doc"
        },
        {
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.3",
            "binary_name": "ntpdate"
        },
        {
            "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.3",
            "binary_name": "ntpdate-dbgsym"
        }
    ]
}