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RHEL 4 / 5 : ntp (RHSA-2009:0046)

medium Nessus Plugin ID 35551

Synopsis

The remote Red Hat 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

https://access.redhat.com/security/cve/cve-2009-0021

https://access.redhat.com/errata/RHSA-2009:0046

Plugin Details

Severity: Medium

ID: 35551

File Name: redhat-RHSA-2009-0046.nasl

Version: 1.27

Type: local

Agent: unix

Published: 1/29/2009

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:4.7, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:ntp, cpe:/o:redhat:enterprise_linux:5.3

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/29/2009

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

CWE: 20, 287

RHSA: 2009:0046