Scientific Linux Security Update : ntp on SL4.x, SL5.x i386/x86_64

Medium Nessus Plugin ID 60526


The remote Scientific Linux host is missing a security update.


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.

After installing the update, the ntpd daemon will restart automatically.


Update the affected ntp package.

See Also

Plugin Details

Severity: Medium

ID: 60526

File Name: sl_20090129_ntp_on_SL4_x.nasl

Version: $Revision: 1.1 $

Type: local

Agent: unix

Published: 2012/08/01

Modified: 2012/08/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 2009/01/29

Reference Information

CVE: CVE-2009-0021

CWE: 287