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

This script is Copyright (C) 2009-2017 Tenable Network Security, Inc.

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.

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.

See also :


Solution :

Update the affected ntp package.

Risk factor :

Medium / CVSS Base Score : 5.8
CVSS Temporal Score : 5.0
Public Exploit Available : true

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