(HP Issues Fix for Tru64) NTP Mode 7 Packet Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID: 1024510|
SecurityTracker URL: http://securitytracker.com/id/1024510
(Links to External Site)
Date: Oct 5 2010
Denial of service via network|
Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes |
Version(s): prior to 4.2.4p8|
A vulnerability was reported in ntp. A remote user can cause denial of service conditions.|
A remote user can send a specially crafted NTP packet to create a packet reply loop between two target ntpd servers. This may consume excessive CPU and disk resources on the target system.
Robin Park and Dmitri Vinokurov reported this vulnerability.
A remote user can cause excessive CPU and disk space consumption on the target servers.|
HP has issued a fix for HP Tru64 UNIX.|
The HP advisory is available at:
Vendor URL: ntp.org/ (Links to External Site)
Input validation error, Resource error|
This archive entry is a follow-up to the message listed below.|
Source Message Contents
Date: Tue, 05 Oct 2010 12:04:14 -0400 (EDT)|
Subject: [security bulletin] HPSBTU02496 SSRT090245 rev.1 - HP Tru64 UNIX Running NTP, Denial of Service (DoS)
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c01961950
HPSBTU02496 SSRT090245 rev.1 - HP Tru64 UNIX Running NTP, Denial of Service (DoS)
NOTICE: The information in this Security Bulletin should be acted upon as soon as possible.
Release Date: 2010-10-04
Last Updated: 2010-10-04
Potential Security Impact: Denial of Service (DoS)
Source: Hewlett-Packard Company, HP Software Security Response Team
A potential security vulnerability has been identified on the HP Tru64 Operating System when running NTP Server. The vulnerability could be remotely exploited to create a Denial of Service (DoS).
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
Tru64 UNIX v 5.1B-5 (BL28) running NTP
Tru64 UNIX v 5.1B-4 (BL27) running NTP
CVSS 2.0 Base Metrics
Reference Base Vector Base Score
CVE-2009-3563 (AV:N/AC:L/Au:N/C:N/I:P/A:P) 6.4
Information on CVSS is documented
in HP Customer Notice: HPSN-2008-002
HP is releasing the following setld-based patch kits to resolve the vulnerability.
ITRC Download Location
MD5 and SHA1 Checksum
HP Tru64 UNIX v 5.1B-4 PK6 (BL27)
MD5 results: 2b3a21a96b7855d9ca223f483bd5bfed
SHA1 results: ac2221c9d025008b258ac8592a210e16e775fbcf
HP Tru64 UNIX v 5.1B-5 PK7 (BL28)
MD5 results: b34d028797577408d565da27d93c30a9
SHA1 results: b34d028797577408d565da27d93c30a9
The patch kit installation instructions and the Patch Summary and Release Notes documents provide patch kit installation and removal instructions and a summary of each patch. Please read these documents prior to installing patches.
PRODUCT SPECIFIC INFORMATION
Version:1 (rev.1) 4 October 2010 Initial release
Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy.
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* The Software Product Category that this Security Bulletin
relates to is represented by the 5th and 6th characters
of the Bulletin number in the title:
GN = HP General SW
MA = HP Management Agents
MI = Misc. 3rd Party SW
MP = HP MPE/iX
NS = HP NonStop Servers
OV = HP OpenVMS
PI = HP Printing & Imaging
ST = HP Storage SW
TL = HP Trusted Linux
TU = HP Tru64 UNIX
UX = HP-UX
VV = HP VirtualVault
System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions.
"HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement."
Copyright 2009 Hewlett-Packard Development Company, L.P.
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