Debian DSA-3108-1 : ntp - security update

high Nessus Plugin ID 80208

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several vulnerabilities were discovered in the ntp package, an implementation of the Network Time Protocol.

- CVE-2014-9293 ntpd generated a weak key for its internal use, with full administrative privileges. Attackers could use this key to reconfigure ntpd (or to exploit other vulnerabilities).

- CVE-2014-9294 The ntp-keygen utility generated weak MD5 keys with insufficient entropy.

- CVE-2014-9295 ntpd had several buffer overflows (both on the stack and in the data section), allowing remote authenticated attackers to crash ntpd or potentially execute arbitrary code.

- CVE-2014-9296 The general packet processing function in ntpd did not handle an error case correctly.

The default ntpd configuration in Debian restricts access to localhost (and possible the adjacent network in case of IPv6).

Keys explicitly generated by 'ntp-keygen -M' should be regenerated.

Solution

Upgrade the ntp packages.

For the stable distribution (wheezy), these problems have been fixed in version 1:4.2.6.p5+dfsg-2+deb7u1.

Plugin Details

Severity: High

ID: 80208

File Name: debian_DSA-3108.nasl

Version: 1.18

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/23/2014

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ntp, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2014

Reference Information

CVE: CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, CVE-2014-9296

BID: 71757, 71761, 71762

DSA: 3108

Detections

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