Scientific Linux: CVE-2009-0021 Moderate: NTP Time-Spoofing Risk

Date: Thu, 29 Jan 2009 15:31:20 -0600
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: ntp on SL4.x, SL5.x i386/x86_64
Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it."
 

Synopsis:	Moderate: ntp security update
Issue date:	2009-01-29
CVE Names:	CVE-2009-0021

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.

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

SL 4.x

 SRPMS:
ntp-4.2.0.a.20040617-8.el4_7.1.src.rpm
 i386:
ntp-4.2.0.a.20040617-8.el4_7.1.i386.rpm
 x86_64:
ntp-4.2.0.a.20040617-8.el4_7.1.x86_64.rpm

SL 5.x

 SRPMS:
ntp-4.2.2p1-9.el5_3.1.src.rpm
 i386:
ntp-4.2.2p1-9.el5_3.1.i386.rpm
 x86_64:
ntp-4.2.2p1-9.el5_3.1.x86_64.rpm

-Connie Sieh
-Troy Dawson
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