CentOS 4 / 5 : ntp (CESA-2009:0046)

medium Nessus Plugin ID 43728

Language:

New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote CentOS host is missing a security update.

Description

Updated ntp packages to correct a security issue are now available for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source.

A flaw was discovered in the way the ntpd daemon checked the return value of the OpenSSL EVP_VerifyFinal function. On systems using NTPv4 authentication, this could lead to an incorrect verification of cryptographic signatures, allowing time-spoofing attacks.
(CVE-2009-0021)

Note: This issue only affects systems that have enabled NTP authentication. By default, NTP authentication is not enabled.

All ntp users are advised to upgrade to the updated packages, which contain a backported patch to resolve this issue. After installing the update, the ntpd daemon will restart automatically.

Solution

Update the affected ntp package.

See Also

http://www.nessus.org/u?5d264402

http://www.nessus.org/u?4be1d234

http://www.nessus.org/u?6dcd8c7c

Plugin Details

Severity: Medium

ID: 43728

File Name: centos_RHSA-2009-0046.nasl

Version: 1.17

Type: local

Agent: unix

Published: 1/6/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:ntp, cpe:/o:centos:centos:4, cpe:/o:centos:centos:5

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2009

Vulnerability Publication Date: 1/7/2009

Reference Information

CVE: CVE-2008-5077, CVE-2009-0021, CVE-2009-0046, CVE-2009-0047, CVE-2009-0048, CVE-2009-0049, CVE-2009-0124, CVE-2009-0125, CVE-2009-0127, CVE-2009-0128, CVE-2009-0130

BID: 33150

RHSA: 2009:0046

CWE: 20, 287