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Ubuntu 14.04 LTS : NTP vulnerabilities (USN-2567-1)

medium Nessus Plugin ID 82765

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

Miroslav Lichvar discovered that NTP incorrectly validated MAC fields.
A remote attacker could possibly use this issue to bypass authentication and spoof packets. (CVE-2015-1798)

Miroslav Lichvar discovered that NTP incorrectly handled certain invalid packets. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2015-1799)

Juergen Perlinger discovered that NTP incorrectly generated MD5 keys on big-endian platforms. This issue could either cause ntp-keygen to hang, or could result in non-random keys. (CVE number pending).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected ntp and / or ntpdate packages.

See Also

https://ubuntu.com/security/notices/USN-2567-1

Plugin Details

Severity: Medium

ID: 82765

File Name: ubuntu_USN-2567-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 4/14/2015

Updated: 10/20/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:P/A:P

CVSS Score Source: CVE-2015-1799

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2015-1798

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ntp, p-cpe:/a:canonical:ubuntu_linux:ntpdate, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 4/13/2015

Vulnerability Publication Date: 4/8/2015

Reference Information

CVE: CVE-2015-1798, CVE-2015-1799

BID: 73950, 73951

USN: 2567-1